No doubt there are differences between the markets but at a high-level similar forces act on both. That is, in both cases, the vast majority of participants either break-even or lose money. A small minority makes money (and therefore takes in most of the profit to be had). The uber market, because it centralized and has an impartial dispatcher (i.e. Uber corporate), that market will probably be more egalitarian. Overall though, the same dynamics play out.

For real-estate, some numbers that I saw had 51% of licensed real-estate agents making one or zero transaction in the past year.