The big chains knew exactly what they were doing and are very plugged into corporate travel policies. They know that those companies not large enough to negotiate the provision or its impact into a contract will eventually come along.

Same thing when air carriers upped the domestic change fee and restricted SDC. People predicted doom and yet here we are.

There will be a small # of businesses which dig in their heels and won't live with the new policies. But, they don't move the market and the possibility that some people will jump ship has already been factored into the cost-benefit.

What this will end is the practice of simply booking rooms because one might need to travel and then cancelling at the last second when the room isn't needed. That inventory spoilage was likely very costly and will outweigh the loss of OP's business.