[OverlordXenu]

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.

[yummyfajitas]

Uber is one of many suppliers for driver/rider matching services. They are not a gatekeeper either, and its unclear what rent you think they collect.

(In contrast, traditional taxis do collect rents - the delta between a medallion restricted taxi market and one without barriers to entry.)