San Antonio, OKC (and SEA before), Denver, Detroit from 2003-2008, Boston, Indiana from the early '90's until mid 2000's, Utah (with STockton/Malone and then Williams/Boozer), Portland, Sacramento late '90's- early 2000's, and Cleveland for prior 7 years all differ with this thinking. As does Golden State, LAC, NYK for prior 10 years and even last summer losing out on LBJ and Bosh, and Miami 5 years before super friends teamed up.
As for teams intentionally losing, a team loaded with talent will not lose year over year and if it does there is an issue with the coach or management. With Durant, Green, and Westbrook the Thunder still only managed 23 wins - part of it is growing together and gelling.
If a team is constantly losing they are the perennial losers - just as there are perennial winners. The middle will certainly improve in my opinion. Take out the top 5 and the bottom 5 and suddenly the middle 20 teams are a much better product under this system in my opinion.