Sharing is owned by the community without middle-men deriving rent.
By this definition, virtually nothing is sharing beyond maybe volunteer operated community gardens. Virtually every service involves some sort of middle men getting a cut. Even a volunteer run community garden would if gardening supplies are purchased rather than wrought from supplies indigenous to the land.
You're being intentionally obtuse and making a flawed analogy. There is a major difference between a community garden where someone has to go to Home Depot to buy supplies and Uber/AirBnb. In the Garden scenario, Home Depot does not act like Uber as they are not the gatekeepers to your community garden, but instead one (of many) sources for supplies. Home Depot is not rent seeking or deriving rent.
By this definition, virtually nothing is sharing beyond maybe volunteer operated community gardens. Virtually every service involves some sort of middle men getting a cut. Even a volunteer run community garden would if gardening supplies are purchased rather than wrought from supplies indigenous to the land.