Scarcity of resources inspired the wheel, crop rotation, and breast implants. When scarcity is left unresolved, suffering ensues. Choices need to be made about how to best deal with limited resources. That decision-making process is, in short, the essence of politics. But scarcity also creates values and habits which operate below the political level.
Sharing is a universal concept but it has little to do with top-down politics.
Forced sharing, despite the Left's endorsement, is in fact an oxymoron. In reality, anything forced by the state is either a tax, theft, or both. Arranged marriages, contracts, even language itself are conventions conceived in an effort to temper humanity's natural tendency to grab things we want without asking. This is why we teach manners to children, because grabbing is perhaps the first human impulse. Japan has great social capital and can keep things like crime down.