I agree. I'm a fan of "the price is the price," with all of the various overhead expenditures being factored into that price. There's not a line item for their app developers, nor a charge for their server hosting...
Lyft's ain't free, it just uses the legal fiction of a "suggested donation" as a fairly transparent attempt to avoid taxicab regulations in some cities.
It's not even clear exactly what this fee is supposed to be covering