The issue is not three point lines or posting up players or easy layups. It comes down the creative GMs and coaches that can evolve and adjust their teams to win by creating matchup problems in different ways along with players having a team first mentality.
The Warriors tried the "big man" route and just never were able to build a team in that way. When Curry came along, followed by Klay, they realized they may be able to play the game different and evolved the team into a shooting one. They also got rid of cancerous players and focused on players that put team over individual stats.
What may the next evolution of yesterdays Celtics, Lakers, Bulls, Spurs, or Heat or todays Warriors or Cavs looks like? I don't know, but two places I would peak --- the Celitics, Jazz and Bucks. Those teams are assembling a pretty good nucleus of young players. The challenge will be to continue to augment their core while still keeping everyone in a team first mentality. Not easy to do with kids today given the number of kids brought up with the mentality "but mommy/daddy said I am the star".