Not to mention the problem of how to acquire the initial capital to buy/make those equipments? If it is a contribution model, where each member pays (an equal

Not to mention the problem of how to acquire the initial capital to buy/make those equipments? If it is a contribution model, where each member pays (an equal amount, let's say), then each member is incentivized to over-utilize the equipment to maximize their initial investment. This basically leads to the tragedy of the commons. Private ownership of capital and equipment aligns the owner and the use of that equipment in a way that community ownership doesn't.