I've been more fortunate than most, in preparation for this new mode of work. My boss allowed me to work in a local office, 1 day a week the last couple of years. I have a work laptop will a docking station, so I can plug a second monitor into it and perform my job. Normally I remote to my regular desktop 70 miles away, because the data transfer rates are far faster, than pulling the data down over the wire to my work laptop. (I've tested it, working only from the laptop is painfully slow.) My concern is how hot is it getting in the office 70 miles away? One of my colleagues who works in the local office, said he had to leave the office to work remotely, because they weren't bothering to turn on the air conditioning. That building was getting very hot.
But I know I'm the exception, not the rule. My employer had been so dead set against allowing people to work from home (WFH), they were caught off guard when they had to allow it. The infrastructure to allow for thousands of people to WFH simply wasn't there; the best they could do at the beginning was allow at most 200 people to do that. They've caught up and now I believe all non-essential people are WFH, but it took a while to get ready for what we're doing today.
I'm sure that my situation is likely typical of many organizations.