This is going to be anectodal. In my experience, they mostly don't know. Also, I have been to countries where Uber would charge you 4-5x of what they pay to drivers. In those countries, taking a cab would be half the cost of Uber albeit at a "perceived" risk to your well-being. Uber knows how to monetize convenience and risk-aversity.

There is also a fundamental floor how cheap compute can be: infrastructure costs, hardware depreciation, maintenance. Realistically, in next 5 years, we will not reach negligible compute costs. You can ask crypto-currency community about the limits of compute costs.