I'm not convinced this move is going to help them gain more players. New players will come into the game at a disadvantage now with a slower training rate. Training in real time is an interesting gimmick but one of the biggest barriers to the game (you can be the best pilot in the entire game with more money than everyone combined and you still can't fly any ships fancier than the tier 1 ships for usually several months let alone YEARS for some of the bigger ships like carriers).
Not going to like though this temps me to start-up my old account even if it is just so I can resume training skills that never finished.
As with other subscription games with a F2P option tacked on later, the F2P option is very, very restricted. A handful of available ship types and skills, and the skill limits heavily restrict how efficient you can be economically.
So I don't think there will be a lot of competition created by free accounts. But more players playing EVE will increase the overall ISK generation rate in the universe a little bit, so you might see some mild inflation.