I do Windows application development and the company I work for is all desktop machines. Some of the static analysis tools need a lot of RAM and CPU (I have 128 GB and a pretty new Threadripper with a lot of cores). There aren’t good laptop options for this type of development machine, at least not ones I’d like to use (ie minimal fan noise).
I would expect any call centre type operation would have desktops.
The employees would never work from home (outside of a pandemic) and work set hours.
So if desktops costs less, they will of course be used here since there is nothing to be gained from paying extra. Similarly, these users would not be using pricier Apple products.
> The employees would never work from home (outside of a pandemic) and work set hours.
This isn't quite true, the call center at my Co. is partially remote for call center staff, they use jabber and other VoIP connected to their PC's to work from home.
Manufacturing plants, gas stations, mechanic shops, every single retail store, restaurants, movie theaters, bars, call centers, farms, police stations, prisons, libraries, etc. Basically everywhere my guy. The world isn't just dev shops.
Most of those aren't offices. And many of the computers at places like that either are POS terminals or other specialty hardware. And even at most of the places you listed, I bet you'll find most of the actual office work is still done on laptops. The accountants back at the office for the movie theatre and gas station companies almost certainly have laptops
Any cubicle farms, like call centres.
University labs, Hospitals.