Or are just doing it for fun.Well the players who are getting their sole MTG experience through Cockatrice are doing it wrong.
It's no secret I can't afford to buy cards or an MTGO account, but on top of that, I don't want to pay for something that I do occasionally for fun. I'm well aware that I'm in the minority on that, but that doesn't negate the fact that people like me exist. People like me are not high enough in number as to bankrupt Hasbro, though. If you want to compete and/or win prizes, you have to pay for the privilege. Everyone knows that. So, I don't see how it's going to hurt Hasbro in the least to allow this site to continue. They will still have people paying for and dedicated to MTGO for
the contest/tourneys.