Because you expect to be giving MORE than you are entitled to, for free. You are expecting a custom service, because you feel the service Bioware is providing to solve the issue is not adequate to you. You are not special. You pay for a subscription, and the game is functioning correctly. You will be moved to a higher population server, which solves THE issue. It may not solve YOUR issue, but, that's YOUR issue, not Bioware's.
So if you want YOUR issue solved, then you might have to pay a little extra.