You know it all comes down to balancing it. F2p titles have excrusiatingly long grinds to encourage players to buy it instead. These get a free pass. What doesnt get a free pass is when a fully priced title acts like a f2p game. Im thinking battlefield 4 here. I cant believe everyones problems with it was bugs or framerate when all i could see was that i got nowhere into unlocking the good weapons. The game even has shortcut packs where you pay a fifth of the game to unlock a class content immediately.