IMO it's still terrible if there is effectively only one product option. A democratic decision is just as bad as a shareholder one if it's choosing to favor a majority group over the minority (2 wolves and 1 sheep voting for dinner choices).
>outsources the generation of actual value to others
If you don't think there is value in the network, feedback mechanisms, and simplicity of using Lyft/Uber/whatever, you have completely missed why they are popular. Cabs would still dominate and would have been as popular as Lyft and Uber are now if all of the value was generated by drivers with cars. I think you probably meant to say 'outsourcing the labor' to others, which is completely different and companies have been doing that for centuries.
Labor != Value. I can go dig ditches in a yard for 10 years and not create any value.