I recently read an article (sorry, can't find it now), that one of the risks with 5G is that it may adversely impact navigational systems. Wonder if this may be having an impact on GPS as it grows in market share?
That was about radar altimeters, not GPS. That 5G band hasn't been occupied yet, it's still being auctioned (and it's already the largest auction in US history).
Auctioning off a public resource like this is a bad idea. All it does is effectively tax the eventual public use of the resource that was free to begin with, whilst creating niches for rent seekers in the process.