The NBA would become a serious vector for COVID-19 transmissions from player to player, who are likely effectively immune but would pass it on to all the pathetic hangers on that they support with their obscene salaries.
The fat old geezers in the stands, who drag their wives to the games and think they are doing something nice for the bored women, will be drinking and idolizing the athletes who hate them as pathetic bafoons and yelling and screaming and aerosolizing the virus for the other pathetic losers who couldn't play the game in their youth and think they are having fun yelling for the mercenaries who wear the local jerseys even though they can't really articulate what they like about the game anymore.
So, they are going to play in a "bubble" with no fans but it will have all the charm of those fucking game films we used to watch in high school to dissect what the other team was doing and who to watch out for on game night.
Who the fuck will watch that bullshit? Without the fans, who can't attend due to the virus from Wuhan, China - what is the point? The players feed of the fans and vice versa.
We need people to work and do the critical functions in our society such as school, manufacturing, business, government, etc.
We are going to have to do without large gatherings and the associated collateral damage - even if it means the NBA, and other leagues with a similiar situation, lose billions.
Outdoor games with significant social distancing will likely lose the crowd effects as well. Baseball as a game is fine with the spacing but without the fans it is too slow and no different than a sparsely attended high school game.
Sadly, Trump will have to postpone his rallies for the same reasons. It sucks but we all have to sacrifice.