Uber Eats has a number of competitors for food delivery services in CA.
And since UberEats's drivers already tend to work for their competitors as well, the effect of Uber pulling out of the market probably wouldn't even be noticeable.
It is not like the competitors is going to have a good time dealing with this any easier.
And they have even lesser cash to burn.
The delivery price is already a significant chunk of the order, and if the price goes up significantly, I guess the option for people is to stop ordering food and cook at home.
Which is good and probably saving me a lot of money anyway once I get used to it, but I don't think drivers will be the only one that are unhappy with this.
And since UberEats's drivers already tend to work for their competitors as well, the effect of Uber pulling out of the market probably wouldn't even be noticeable.