Yes. Even before the pandemic I (and most of my Big4 colleagues) worked from home when possible (my firm didn't care at all if you came to the office), but 80%+ of the time we were at the whims of our client and were traveling to their offices, anyway.

This announcement probably means a lot more for the internal services staff and the accounting teams that don't go to clients often, but for almost all of the client-facing staff I doubt this makes much of a difference.

Nope. I haven’t been into the offices for the majority of my clients, and when I have, it’s only been to pick up a secured laptop and physically sign papers.

If the clients are also working from home where are you going to go?