There are many such schemes for low income households in the united states to subsidize internet access for students. There were some federal and other programs.

Probably LTE is cheaper to deploy then actually wiring a house up anyway.

I work with a US non-profit that has provided both free and very low cost Internet access over the last 4 years (fixed home wifi, no phone). We have primarily used 4G/5G, including private networks built and owned by the non-profit, public/private partnerships with cities that own a 4G network, and now primarily very low cost wifi hotspots serviced by a major carrier.

The federal plans still exist, and the wires are already there in most homes, so most providers offer a tiny plan to fit the subsidy.