The inability to negotiate is the key point. On the point about choice, there are areas where drivers can drive for Uber or Lyft though so some drivers do have choice.
Where I drove for Uber, there were five platforms. But Uber had 90%+ of the rides. In a year, I think I got one Lyft request, and nothing from any of the others.
If there were plenty of customers on all platforms your statement might be valid, but that's not the reality.
What? There is literally no cost. You download the competitors app, and youre good to go.
Prices for the ride are always changing. Uber usually has lower per mile cost, while Lyft has a bit lower minute cost. This does not affect switching costs.
Where I drove for Uber, there were five platforms. But Uber had 90%+ of the rides. In a year, I think I got one Lyft request, and nothing from any of the others.
If there were plenty of customers on all platforms your statement might be valid, but that's not the reality.