It's not just a question of theory or philosophy but a necessity. Sharing has always been part of our human cultural heritage, from villages sharing resources way back then to communities around the globe now and the current rise of bartering. Our system currently functions the other way and our economics are built around ownership. In order to turn around the trend and go back to sharing, it will take time and resources, which means early adopters will pay premiums until companies develop sustainable businesses practices to allow everyone cheaper access.
There have been a lot of predictions about how we will eventually stop using money and either barter or find sharing systems. The Bitcoin idea developed a while ago has gained ground and is looking more and more practical. But if you don't want to believe this, you can always watch Star Trek when Cpt Picard finds someone form our era on the Enterprise who raves at how powerful and rich Picard must be. To this he laughs and says they hadn't used money for over 3 centuries and work for the common good of society. Yeah, that and a pretty healthy dose of humor