Well, if really MorphOS Team can really give things wich MorphOS need (Stack, better 3d card support, working printing support), sure is not bad pay something for all this work.
But important they should not give a "under developing OS" if the version become "payed", becouse i think user's don't like pay for waiting more...

Linux is another things, distributions have their sponsors, and seem MOS team is more small and have lesser resources than a big Linux Distribution...