That strategy gives you better margins. It doesn't give you better revenue or profits. The biggest problem Tesla had as a fledgling car company was cash flow, and the solution to that is scale and sales. FSD can be converted to immediate revenue by just charging for it, which is more cash-flow efficient than running a centralized taxi service. They have announced they have a dedicated rideshare vehicle in the works, and it's likely something of that nature was always in the works.