I've seen registrars selling certain desirable domains at a premium. What if a non-profit's domain is suddenly considered premium and they want to charge thousa

I've seen registrars selling certain desirable domains at a premium. What if a non-profit's domain is suddenly considered premium and they want to charge thousands of dollars to renew? It becomes a ransom that you must pay in order to keep access to your email inbox, and everything that comes along with that.