I used to work for a company that does development of things like TV apps, and physical hardware. They’d distribute wireless APs to engineers which automatically connected to the corporate VPN and exposed that via the AP for devices which couldn’t be directly configured to do so but needed access to development servers only accessible internally.
We have those as well, for similar uses. And for folks for whom any connection to the public internet may want to be avoided. The stuff's expensive, though, so they are not for the day-to-day end users.