Every time Butler does well, other franchises catch strays
All the talk in this thread regarding the culture of the Heat vs Sixers is overstating the importance of Jimmy Butler. He's more a symptom and less of a cause.
The Heat's culture is strong because Pat Riley didn't bow down to LeBron James or Dwayne Wade. He kept Spo as head coach and wouldn't give in. This did cost Miami when James went back to Cleveland, but preserved the team first. Then, near the end of Wade's career the Heat wouldn't overpay him, and he signed a big deal with the Bulls. Of course it didn't work there (3 Alphas

), but Miami was also smart enough to bring him back after he realized the error of his ways.
On the other side of that culture coin the Sixers went with The Process. Which was a fine strategy, but they did so with very, very few veteran players that could help build things correctly even while the losses piled up (same mistake Houston has been making of late). Then they empowered the most talented players like Simmons & Embiid, but without the responsibility being earned from the previous leaders / vets. Add in a disjointed group of governors, head coach, and certainly general managers and the whole thing feels like it's built on sand.
...and I don't mean South Beach sand.
Organizations can certainly win big by doing whatever they can do to land and keep specific big name players (Lakers bubble title with LeBron & AD), but more often that just doesn't work (Clippers with Kawhi & PG, Nets with KD & Kyrie, and numerous other examples of late) and then the organization is gutted with a big hole where salary, draft picks, and a sense of competency typically reside.
Jimmy Butler is a perfect fit for the Heat because he's not the type of player that needs to be catered to. He wants greatness and is willing to work for it and to be held accountable when he doesn't get the job done. Organizations that are unwilling or incapable of standing up to star players when they should will ultimately fail.
The Sixers of late are a great example. They constantly coddle and protect and obfuscate and argue and give excuses. That's why that team hasn't made it past the 2nd round in forever while a much less talented team like Miami always seems to develop players from nowhere and overachieve.
...
Without talent none of this really matters, but if I'm a star player like (oh I don't know) Luka Doncic I'm looking around my own organization and I feel a lot of Sixers vibes there right now. That should worry Dallas fans. Meanwhile, OKC has been piling up losses for years, but from the outside the culture there feels a lot more like the Heat.