Actually, I don't deserve my customer's money, unless we specifically enter into an agreement where I agree to provide some service or product in exchange for that money. And to my knowledge, buying TM 1.0 in no way included an agreement that v2.0 would be released at a specific time or in specific intervals. Ergo, the creator of TM owes his customers absolutely nothing. He can go crawl under a rock and die, or he can build the greatest text editor the world has ever seen and never release any of it to anyone. It would be a great waste but that's his right.

Wanting something does not give you the right to it.