"Tame" is the wrong word. What needs to happen is Max needs to understand that meeting his ambitions really does require a change of approach. I think that's started to sink in this race, but expect it to take a few more before he finds a good balance between his natural talent and the need for at least a modicum of race-protecting skills. The variety of racing lines possible (not just the ones Max actually uses vs the "traditional" line). How to spot when a move is on vs when it is not. How to use "dummy" moves, truly effective use of DRS, and variations in energy use, so that Max is no longer dependent on only one way to overtake (and, by extension, mean his competitive instincts are less likely to lead him astray - teaching someone to make a different move work is more effective and also quicker than simply teaching them to "be cautious". He can work on that later - if necessary).
Once the race-protecting skills are in place, Max probably will be able to decide how much, if anything, to tame himself without anyone else needing to intervene. This is a skill deficit hampered by (until now) encouragement to reject learning and improvement from powerful backers, not a "pure" driving style failure. The Red Bull management appears to have started to release Max from the grip of being the "golden boy" (the "someone is feeding Max's reckless tendencies" is Helmet Marko, the head of Red Bull's young driver program and 2nd-in-command in the Red Bull infrastructure), which means coaching to skill now has a decent chance of working.
If people don't teach Max race-protecting skill, it may preserve his fighting spirit but Max will never win a race on merit (in various ways, I believe all 3 of his current wins were boosted by actions that would have merely led to punishment had anyone else tried them).
If people teach Max the race-preserving skills and then trust his autonomy after he has shown he understands them, I think he will become the great racer he was always meant to be. He doesn't have the tactical cynicism that Michael Schumacher had, so I think he can skip the downside of that approach while still getting its substantial upside. It would also increase his trust of the coaching techniques so that if he needs them for any reason later in his career, he can fix problems "on the fly" with their help, instead of having the same weakness in his driving for 4 years for no good reason. The things we're complaining about here lost Max the F3 title... ...learning to fix them will help him not lose the F1 title.
If people teach Max the race-protecting skills and then also try to dictate to him how to integrate them into his driving style, that could, in theory, kill his fighting spirit. Sometimes, it's not just about what is taught, it's about what is not taught. More likely, however, it would lead to the advice simply being ignored unless/until someone Max actually respects teaches the same things. While I don't think Max is particularly prideful, he is particularly stubborn
In this case, simply teaching how to protect races is likely to be the most effective way to help Max.
As for "hope to drive for Ferrari..." If Max wanted that, he should have waited to join the Ferrari young driver development program when it was available, instead of assuming his choices were Red Bull or Mercedes. Ferrari doesn't like feeling forced into young driver choices, and in any case also requires certain personality parameters to be met that Max would not have been ready for at 16 (assuming that he wasn't about to buy his way into the program like Lance Stroll once did). From then on, Max restricted himself to Mercedes or Red Bull (with the emphasis on the latter).
As it stands, it's pretty obvious to me that Ferrari is hoping to put Leclerc in its car (with the aim being 2020 rather than 2019 - good for Raikkonen, less good for Verstappen or any other interloper). If Vettel retires unexpectedly, things may change - but they'll need to see skill improvement, not merely an apology, to seriously consider Verstappen.
There is a place for wild drivers (not just young ones) in F1. It is not with someone who expects to regularly win races while still carrying said driving style. I'm not sure Pastor Maldonado ever seriously expected to win a race, but Max does... Yes, it's fun to watch them, and it's fun to watch them mature, but those two steps come before regular winning. Max is in his 4th season of F1 and carries title ambitions; it's simply not appropriate to what he wants from his participation in F1 to continue to be reckless.
Similarly, F1 needs a pantomime villain. But pantomime villains always lose in the end. Max detests losing and is therefore a bad fit for the role. (Again, contrast Pastor, who seemed to be uncomfortably resigned to losing, rather than burning inside from it). Since most F1 drivers hate losing, I prefer the "pantomime villain" role to have a rolling identity from year to year, rather than one driver occupying it for many seasons in a row. Permanently unhappy drivers don't do well in any role. It's time to let someone else be "pantomime villain" for a season, if that's possible, and not force Max to continue carrying the burden for people's entertainment.
We know how a lesser team would handle Max's driving and attitude. Toro Rosso basically fired him after China 2016 (meaning he effectively won the Spanish Grand Prix following it due to sloppy driving and a bad attitude), hence why he is in Red Bull at all...
Hamilton's persona is "hip guy who hangs out with Hollywood and lives life by his own rules". Vettel's is "regular man next door who happens to be good at racing cars". So there is a conflict there... ...except the media doesn't appear to want to pick up this one after 2007 soured them to the approach, and both drivers are sympathetic to each other, if not exactly friends (and certainly not acting like friends on-track!)
I'd like to think that Max's collision with Seb is a crucial turning point... ...the point where Max realised he needs to broaden his repertoire, to succeed in winning the F1 world title as he wishes to do.