In reality there is an opportunity to hire wider pool of full time applicants in US because now you can offer even 1 day a week in the office instead of 5 or doing 1 day a month.
If I have to consider company that is 2h driving away - one way - and be there 5 days a week, that is a deal breaker.
Doing that once a week is still much more manageable and opens up opportunities for employees and employers as well. Especially if someone can't just move to next big city on a whim but can drive there once a week.