I don't see how everyone else out West got better.
OKC shot their wad on two creaky statues (at least one of whom will likely leave soon in any event).
Houston got an aging point guard -- I've noticed that Spurs fans don't seem to love such guys (at least when they're on our side).
The Spurs may have problems, but I don't see how the other Western teams are getting better over the long haul.