There is work at home and there is remote work. Most companies of any size (more than 1 location), have remote workers. My first job out of college in the late 90s had most of my 'team' spread across the globe in other offices. We got everything done through conference calls and emails. Eventually I stopped going to the office because there was no point. This also was not some super forward thinking tech company, but it was very cost conscious. The cost savings alone led the company down the path of figuring out who could WFH and how to make that work.