To be honest, the problem is a lot more pronounced with media sharing than with microblogging. I wonder if that's one reason why there's been a lot more proliferation of microblogging sites on Fedi versus media sharing sites - running your own instance involves a greater investment to handle streaming and storage.
Media storage is going to be an issue for #Pinetta too; it's a can that we've been kicking down the road for a while now.