I have worked at home, or as a high-travel person, for almost 20 years. It started when I hung my own shingle out after the dot-com crash, and then continued into two small firms.
The first one folded in 2007, but I've been with the second one since then (so, 14 years this month). Both firms had geographically diverse teams, and neither have any office space anywhere.
Until about 10 years ago, I did a lot of client-facing travel. Then, all of a sudden (seemingly), that stopped. In retrospect I think it was because in-person visits for our work (implementation of our project management system with large-scale customers) really does not need it. What you need is time with us so we can help you configure, and train you, and troubleshoot with you, etc -- and that works GREAT over GoToMeeting (or WebEx or whatever you prefer).
If you want us on site, you're paying for WAY more hours, plus you're paying for flights, hotels, meals, rental cars, etc. AND if we have to go to you, we can't do other work for other customers while we're in your office, which makes US less efficient, so the telepresence approach is a big win on both sides.
*We have never ever ever turns on cameras* as part of this work. This was true before COVID, because they were not a value-add at all. This is especially true during COVID when so many are working with home-grade internet packages with really crappy upload speeds. The video sabotages the audio and screensharing, and brings nothing useful in return, at least for us.
I'm waiting for the rest of the economy to realize this. Several of our customer parties are in organizations that have decided YOU MUST TURN ON YOUR CAMERA or whatever, and we occasionally get questions about our refusal. As vendors, though, we're in a position to just say no.