There is no reason for them not to renew it. The domain itself worth alot even if the whole operation just went ham.
No matter how much the domain costs, there will probably be those who decide to buy it if the freebitcoin team suddenly forgets to renew it. In that case, the worst scenario would be if a scammer decides to buy it and redirects traffic from freebitcoin to another phishing site. Hopefully, that won't happen.