I agree, but I know more about the specifics of the Astros "tank," due to living here and hearing what top brass was saying to fan through the "lean years."
The Rays did it for a while, but it's harder to know if it was mostly about getting top draft picks, because they barely spent more, after they started winning. Their strategy is just spend as little as possible, but still try to win.
It's hard to imagine teams like PIT and KC telling themselves, "let's not try to win." I'm sure they all look at OAK and TBR and think, let's be like them, but it's not easy to win without spending more.
One thing to think about, if MLB imposed a min team budget of $100M, it would likely make it much harder for big spending teams to win, without going to absurd spending lengths, like the Mets tried.
The Sox haven't been able to win with a constant budget over $200M.