"Unacceptable", lol, are you a communist or something? People can do whatever the fuck they want to do with their domains and they don't have to entertain anyone. People who complain about it are simply jealous that they didn't have the foresight back in the early 90s to register them. I know I am. Hating them is stupid though.
Ha ha..No I'm not a communist, and I'm not saying that these people should be forced to sell their domains, but for the love of god, at least do something productive with these domains. I guess I'm jealous too. I only really hate them when it's a domain that I could use and would be happy paying a fair price, yet they refuse to sell AND have no plans to develop the domain.