You can probably buy them a VDI desktop for $20 per month (Amazon Workspaces and Windows Virtual Desktop on Azure are in this ballpark) and run Chrome on that.

You can probably buy them a VDI desktop for $20 per month (Amazon Workspaces and Windows Virtual Desktop on Azure are in this ballpark) and run Chrome on that. Especially with WVD, there are thin clients made specifically for it (or you can just use an RDP client on any OS).