Another model that involves money. "Sharing economy" can be exploitative to their volunteers, or workers. Many workers have to work several jobs in this economy to make enough to survive. Not relying on your tax money, money from government- funded charity organization and money donation from people is the real sustainable movement: unlike some of these models under "sharing economy" that rent something in exchange for your money is just another profitable form of capitalism in disguise. Do some research on who they took from to start their company before your support.