I don't personally think the shared-fleet model is going to be the dominant one. I think private ownership will. Which means you still have to deal with parking and such. But it no longer has to be at your office. (Why private ownership? Because if you need something every day, and you can already afford a car, you're gonna want to still have your own personal one and never have to think about not being able to find a ride due to a demand spike, or rates going up, etc.)

Today if you drive you have to actively sit in traffic.

Replace that with a commute in an isolated near-soundproof private office with a comfy chair, fancy sound system.

You're gonna see people who can afford it choose to take the luxury ride over standing packed in a bus or train.

You're gonna see people who lived 25 minutes from their office because they didn't want to lose more than an hour total a day driving start be willing to put up with a longer commute to get more space for the same money, since the commute is now idle alone time, to work or relax as desired.

You take away the biggest negative about something that is seen as a luxury good compared to the alternatives in most of the US. You're gonna get more usage.