Maybe, but I'd expect a good chunk of rideshare traffic still ends up leaving the city, which AFAIK Waymos still won't do.

My understanding is Uber etc. charge and pay based on demand, so if that means the (fewer) human drivers are that much more expensive on snowy days then so be it. If it's a blizzard and Uber fares work out to $100/h I'd be very surprised if drivers couldn't be found.

Compounded by the fact in winter basically everyone will be going to the airports at least twice to escape, which drives demand.

Basically if the planes are flying the robotaxis will need to work.