I was wondering the same thing the other day. With as many devs as there are in the wii scene, why not make another one for people who do't have TP?
1/ you don't find bugs in games like snapping your fingers
2/ the time investment is not worth considering one bug has already been found in a game and will never be patched
3/ "devs" do not give a shit about people who are too lame for buying/renting one game, considering the obvious benefits you got afterward