Pretending your 2% is right, I don't think it's unreasonable for PVP players to want about 2% of dev time. 2%'s a lot different than 0%.
Free Players do contribute to the game. They fill up pugs, they put stuff on the auction house, they get their friends (who then spend money) to play with them. Presumably some die in the brawl pit too. Many eventually buy an adventure pack or monk class or something after months of play. I'm sure turbine would rather they be VIPs, but turbine isn't letting free players play out of charity.