Why do Bowling Alleys work and Roller Rinks don't

Probably because you can rollerskate outside but you can't bowl outside...or can you. Maybe that could be a new sport, all terrain bowling. I know lawn bowling and other bowling exists but why not one where you can knock down pins or whatever you have lying around.

Granted throwing a bowling ball down a street may lead to serious injury, but think of the enjoyment...no?