More difficult to built, more difficult to get permission, ironically, and presumably the datacenters are planning to employ some people so they'll want to live at least somewhat nearby.
even it cost more, but still better thant the current situation?
Probably not feasible if the remote area has no public services. You'd be wanting some people to move to an area without schools, shops, doctors, hospitals etc. I can imagine that appealing to nature lovers, but would they be wanting to work in a soul destroying hyperscale datacentre?