Because they'll be on the trading block, right? That seems like the most logical reason they'd be called "Block Buildings" based off recent historical data.
Rockets win championship with current roster. Proves elite third star not necessary. Morey pulls the trigger anyway. Rockets repeat. Morey flexes future cap space in time for LeBron jr.
Dwight Howard channeling his inner Hakeem and winning the Rockets a championship at the same age as the dream. Despite all the odds, he proves the big man rules once again. It was written, so shall it be.