Basketball has been improved by making big seven-foot stiffs obsolete.
Are they obsolete? Seems to me that guys like Deandre Jordan, Dwight Howard, Andre Drummond, Hassan Whiteside, Robin Lopez, Marcin Gortat, Steven Adams, Rudy Gobert, Jusuf Nurkic ... they're all pretty valuable.
You can't win just by having a bunch of seven footers beasting in the paint anymore. That's a good thing. But skilled interior players, even without great post moves or faceup game, are very useful.
Big guys who can set screens, clean the glass, catch lobs, and finish inside are always going to be valuable, even if their value is matchup dependent and they can be forced out of the game in crunch time.