The problem is where the limit would be for something like that. If they've gone belly up 2 times? 3 times? 4 times? By having a strict policy on not allowing replies to ads by hosts we avoid that kind of problem. Maybe there should be some other place on the forum to point such things out to potential clients. I'm not sure the ad threads is that place. I think it's up to clients to ask questions about how long they've been in business etc.
Edit: And if the host stated it openly what's the problem?
Edit: And if the host stated it openly what's the problem?