I hate to be the bearer of bad news, but there are actually quite a lot of smart people who just don't care to live in the valley for various reasons, and they are all just as available as you are when the whole team is 100% remote. Companies are going to love it, but a subset of employees are going to be sad as the market rate adjusts to the new reality.
I personally suspect the employment market is just not very efficient due to a lack of information. If companies had perfectly accurate information about how good every software person is, available for free, we'd probably all be paid based on that information, with our cost of living ignored.
What if the market says you can get away paying less for group X? What if X is some historically marginalized group? Does it make it OK? What if X = remote workers?
https://elsajohansson.wordpress.com/2017/09/13/what-does-a-w...
A) will be irreparably harmed and have to cease operations.
B) will hire a replacement and be fine.
(Hint: It's B)
It's not a coincidence that conversations around the number of engineers/designers required for a project commonly end up referring to them as 'resources' in most companies.
Since algorithm interviews are the current norm for filtering, there are a huge swathes of people who are just as good at beating such interviews but never got the chance due to their location.
Soda at the grocery store? $1.50 Soda at the gas station? $1.99 Soda at Disney World? $30
Your skills are not worth a fixed rate. Your skills are worth more in certain areas because the demand is higher in those areas. As soon as you go remote, you are competing with every other remote worker in the US. More competition, lower price.