[contras1970]

won't somebody think of plumbers' children? they should be entitled to some money every time we flush! they won't plumb any more toilets otherwise!

and what about carpenters? they won't do squat if we don't grant them perpetual payments for the houses they once built.

same with tailors. they're entitled to fees every time we wear our clothes...

i mean, the incentive argument is so transparently bogus my mind boggles.