Didn't say that corps would go broke.
As for scores,if a corps is faced with putting on entertaining show,one that will get them booked,they will strive to make that show the best they can. Think of Broadway there is no scoring by just six people and yet there are great shows.
Really you would not go to see MBI,CABS and others just because they aren't getting a score?
People will pay to see MBI,and the likes if the shows are entertaining. if the corps' get lazy and push less for excellence, people will not pay regardless of scoring or not.
Think of it as a rock concert with a bunch of great groups,there's no scoring but you are there to see a great show.
You don't need a score to tell you ,you re good the people in the seats jumping up and are telling you, you are good