Have you personally started using video differently, or has your company or business?
My coworkers might want to see me on video, but I'm used to having an iron curtain between work and the rest of my life and I'm not comfortable with letting work intrude that far into my home. As nice as it is to be able to work from home I see no reason why I should give my coworkers a view of my basement.
Besides, I have a face made for radio and a voice made for print. I'm doing my team a favor by keeping my cam off.