Denver, Houston, Lakers, Clippers all have a franchise player in their prime. Dallas and Utah have young studs who aren't even at their peak yet and will get better. Golden St will be back in the playoffs once Curry/Klay get back. That's 7 teams with some sense of direction and a plan to be stable as far as playoffs go.
NO and Memphis may have found their future in their 2 rookies who are both looking rather impressive. And if we include Portland as a team that can compete for a playoff spot that's 10 teams with a sense of direction that will be competing for 8 playoff spots for atleast the next 3-4 years.
Meanwhile the Spurs have zero sense of direction. They can't decide if they're tanking or if they're "fighting" for a playoff spot. They don't know what to do with DeRozan (trade, extend, or let him walk). They have no young stud as a cornerstone and no franchise player in their prime. There is no SF on the roster. Besides the Suns, Kings, and Wolves, there is no team out there that have a worse situation than the Spurs moving forward.