A single fixed base station normally expects ~1cm accuracy on the roving receiver. There is nothing in the article to suggest that they are going for even great

A single fixed base station normally expects ~1cm accuracy on the roving receiver. There is nothing in the article to suggest that they are going for even greater accuracy or precision, merely that they want to avoid fixed base stations in favour of many roving stations. That'd have been great 20 years ago, but now that the base stations are already there, what have you gained? Maybe some limited utility in remote places that normally don't see human activity that somehow have many people with cell phones show up, while needing high accuracy GPS and forgetting their tripod-mount base station at home – but beyond that?