I have so many thoughts about this whole situation:
1) With the positive rate of tests being in the 5-10-15% range, depending on location...it's not that unusual that someone would test positive. Now, if it's multiple people and/or an outbreak, yes, that's a problem. I think when people hear that a facility is shut down, the assume it's worst case scenario.
2) That said, it is interesting that this is such a pervasive situation that is affecting many teams. MLS didn't have this issue. Yes, people tested positive after getting to Orlando. And a couple of teams do seem to have an outbreak on their hands. But, it wasn't like multiple MLS teams were shutting down their facilities prior to coming, because of positive testing. Are MLS players more careful than NBA players? I can't say. Are NBA players more reckless than MLS players? Also can't say. BUT...if the cause of all these positive tests is partying/going out/protesting....if they aren't careful at home, who is to say they will be careful in Orlando?
3) I do find it interesting that one of the teams that have not shut down yet is the Orlando Magic. And they are in the thick of a major hotspot. So...if all is well with them, that would be kind of a miracle. It would also show that it IS possible to avoid the virus if you are extremely conscientious and cautious.
4) Lastly, if the NBA were to cancel last minute...OR maybe get a few games in and have a massive outbreak and shut things down.....what does that mean for WDW? Does that make Disney more likely to shut things down again?