Yes, "Fixed Wireless Access" is one of the main short-term business drivers for 5G -- which is one reason handset availability and power consumption are not issues (this is about connecting routers -- they will continue to use WiFi in the home). It is particularly important in the US, which doesn't have a functioning, competitive broadband market. Most of the US carriers are investing in 5G primarily for FWA.
It is less important in the UK, where the places dense enough to really make money from 5G are generally well served by broadband, but it might avoid some fibre rollout in smaller towns. Rural coverage, not so much: 5G cell sites are smaller and villages are less dense -- adding more towers is expensive, even if you use local schools and village shops.