it's a good point, but just a reminder that for most people the price for comparison would be public transit, bicycle, or scooter, not a $30k car.
The true line right now (where car ownership becomes more expensive than Uber) based on my experience is probably closer to an 8-mile commute and a $15k car. That line gets much lower when you add in things like financing, overpriced insurance, and leasing, which do affect a majority of the population.
I should actually do a writeup about this. I have access to all my numbers on it but I've only ever done rough estimates (which were clear enough that choosing Uber/Lyft was obvious). Now I'm curious to see exactly how the costs compared.