Well you have just pointed out what more or less every MMO player in history learned when they clicked on the big-boobed"free-to-play" advertisement. It's a bit sad that there are so many MMOs that have almost identical gameplays, graphics, UIs, e.t.c as that makes them generic and makes players feel equally generic and disinterested in p(l)aying. As for the monetary aspect I wouldn't say it is horrible to pay for a game one enjoys, but the enjoyment should be worth the money.
But that's enough of the opinions for now. In regard your animation I would say it's been well done around the whole with the strongest point being your idea/theme. Your critical analysis of free-to-play MMO gaming has certainly been made many times, but I enjoyed how you satirised the games from the advertising perspective, making the whole display both very humerous and disheartening. That was furthered by how your animation initially was more on the parodising side, making fun of the serious gameplay limitations but later more on the depressing side in terms of how people pay ludicrous amounts to "win" only to really move on to the next game, feeling no satisfaction whatsoever. So for all of that, you work was masterful.
Graphics-wise I would say your art was suitable and worked well with your advertising-voice. There also were decent amounts of detail that gave a very accurate portrayal of the games and their interfaces, their "gain points by clicking shady webpage" scheme and so on. One can tell you did your homework there.
Voice-wise you adopted the typical parody-advertisement style of putting strong emphasis on clearly lacking features which is nothing new, but is plenty effective and was implemented well. The music/effects were at a good standard, but are not too important for this kind of animation.
It's difficult to suggest any improvements you could make as you basically shot down every stereotype/argument of free vs. paying players and the developers as well, so content-wise there isn't much to add. So really, well done!