They've done this is in European soccer and car racing all over the world for a while now. It's no surprise.
I'm not thrilled, but let's be realistic. The NBA is a money making business and ads are part of that business. It's not like the NBA, ads or not, was ever some pure paradise where everyone does everything for the love of the game.
But to be honest (and I'll get on my soapbox for a second), that's what actually makes me like professional sports more than college sports: it's more honest. Professional sports are a business and there's no real facade about that fact. College sports are also a business, but people like to pretend that it's not and that everyone does everything for the love of the game. And to me, that delusion partly led to what happened at Penn State.
Enough now with that. Overall, not thrilled about the ads, but it is what it is because the NBA is what it is.