Deutsche Telekom may be the first carrier in the world to install an Edge Cloud, which they are doing at a remarkably low cost. By going further back in DT's transport network, they reduced the number of boxes required from 10,000's of thousands to hundreds.
A cloud like this - highly reliable but not quite as fast - would be a very small percentage of a carrier’s capex budget. (A carrier has the fiber and other equipment in place.) It would cut the latency on your network by 40% to 70%. Perhaps more important, the latency would be much more predictable.
DT started with an initial dozen sites, which connected to almost all of the country. It is also installing at as many as 900 additional locations in the regions. This is a Level 3 Cloud - on the carrier's network but several hops from the towers.