Most likely. My only thought is, there are still best case scenarios. Sure, Trump aint helping things. But lets say crowds start coming out in may with some restrictions...maybe by June/July, sports leagues are considering their options. If you can run the playoffs, normally, you wouldnt want to. But people will be chomping at the bit to get back to "normal". Here, yeah, everyone wants to go to the cottage and there will be a lot of vacations happening that were deferred from earlier, but I think a playoffs would do very well.
Lots of logistics though. You'll have everyone trying to book dates at once. You'll have networks with multiple things to cover. NBA, NHL, CFL, NFL all at once. SO could be tough. But the owners will want to do it come hell or high water. The big debate will be how to decide because doing ANY games would be gold for the owners, so sure, Boston is in, but what about Detroit? They want some games. They already paid the players. They want to recoup.
I think they'll try real hard to play something. And I think they'll try real hard to have every team play *something* at home. Maybe forget the standings and do some sort of league-wide play-in.