Spurs never tanked. They were a bad team with a lot of injuries who lost a lot of games and then made a good draft pick. Then they rebuilt themselves into a championship team. They did not go out and steal another team's best player to become instant le contenders.
Something is wrong with a league when the great majority of teams have absolutely ZERO chance of winning a le.
If one of these teams do happen to find some homegrown talent and become good, then they will lose their best player to one of the teams that is "supposed" to win.
What reason do fans in Toronto, Golden State, Minnesota, Memphis, Charlotte, etc. have to even be interested in the NBA? Their teams will never contend in this era. It's nearly impossible.