While I completely agree that the world in general, and SL in specific, desperately needs more Communism and Socialism....a lot has to change before that will be possible because people need to learn a new way of thinking. And, SL would still have to make money someway because LL is still stuck in a capitalist world, sadly.
My problem; however, is the bit about "unrestricted desire"....at this stage in the game, humans need more restrictions not less, they're literally killing each other in the streets. No human endeavor could ever have "unrestricted desire" for it would ultimately erupt in chaos and consume itself and there are always the rights of others that have to be protected which means you can not be "unrestricted".
I will give you the point on land; however, if land were more affordable I think we would see more people, businesses, and institutions getting involved with projects in SL which at this moment are cost prohibitive.