It's actually not about whether we open up because we will open up sooner or later. The more important question is what happens if someone tests positive after we open up. Serie A said they can't really have a season because the Italian health authority requires the entire team to quarantine for two weeks. That pretty much throws the entire league schedule out of the window if one or two players test positive.
Take school for example. If one kid tests positive, will the new policy require the school to quarantine that one kid and business as usual for everyone else, or do you shut down the entire school for two weeks? If you have to shut down and re-start periodically, that's a more unmanageable situation for working parents.