Lack of consideration by BOs is not what is ending mid-level boarding barns. It’s the tiny profit margin in a customer-service business run by people who have enough wealth to be able to do something different when the thrill wears off.
I understand why boarders (myself included) really want these folks to run their barns like businesses where contracts mean something and discussed expectations are met, But lots of these aren’t legit businesses. And/or it’s that the BO doesn’t need the money badly enough (or there’s not enough to be made) in order to compel them to be so careful with their paying customers.
Most barns offer the standard of care that they find acceptable for their own horses. If you are a poor carpet-bagger like me (that is to say, I have seen better than I can afford), we are going to have a hard time. I don’t see that changing. But honest-to-God: we boarders still have to keep our heads down and be nice to BOs making very little money if we want this segment of the industry to last.