When you see an "easy" solution to congestion, there are usually factors that make it not so easy - if cities rely on cars for personal transport and don't provide a transit alternative, then congestion pricing alone isn't going to help other than being a regressive tax on the people that can least afford to pay it. The $200K/year software engineer can avoid the $10 tax by working from home until 10am when the rate drops to $5. The $30K/year service worker doesn't have that option, when his workday starts at 9am, he has no choice.

And you can only stretch out the commute so far with congestion pricing before the morning commute runs into the afternoon commute, already in the bay area (pre-covid), I was seeing stop and go traffic from early afternoon through 8pm or so. COVID has been a nice reprieve from the traffic, but many companies want their employees back in the office, so within a year or so, traffic levels will be back to pre-covid levels, maybe worse because many people moved farther away when they were working from home.