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.