Thought it was in the same year, guess I was wrong. EQ2 ran the extended for a full year to see how successful it would be prior to switching all of the servers. I know extended was prior to LOTR because I was playing on extended when that change happened.
There is more money to be made in a f2p model that has a priority on subscription player base than without.
All mmo's should have some form of f2p service if you purchased the game honestly. Forcing people who bought the product to sign an EULA after the fact is not exactly legal.
I look forward to the day when all mmo's are produced and sold in a f2p model. It's coming, I have no doubts about that.
At the topic, DCUO didn't steal anything from STO or LOTR. If anything, DCUO and STO are the most similar mmo types of game. Instant action with limit on content. Only one of them has a full production team supporting it though. Any guesses?