Every time I have to use the slow windows computers at the college I teach at I wish they would put a lightweight linux on them. I wouldn't go full command line but all I'm doing is a browser and word processing. A chromeos-like experience would be fine. Of course what really kills my work computer is the anti-virus. I f I could just disable that then the computer would be a lot more usable.
I was super happy when about 10 years ago I went to the local public library near my parent's house and they had installed Linux onto their card-catalog workstations. I hope it worked out for them. I know it was more likely to perform better than another OS on the same hardware.