The league has handled the virus pretty well so far, exceptionally well given that they aren't in a bubble. I'm quite surprised at the level of discipline teams have had so far. They've at least have gone above and beyond my expectations.
Some teams can bring in fans because they assessed that the risk of exposure to limited number of fans is not that high - probably a long drawn out process, with numbers and data crunching by a chosen group in their brain trust (population data vs covid case #s etc). Whether it's true or not, we'll probably never know.
People running multi-billion dollar operations and you're questioning whether they have a plan or not? My bet is on them having plans. Maybe greed over revenue shrouds their eyes, but I'm going to assume that the decisions they are (going) to make are going to be informed ones.
Just my opinion.