That being said, they've also done a pretty good job in managing that money (which is rare for natural resource rich countries).
In the US, on the other hand, remote places are a lot more inhabitable. There are just more remote towns in the US, with more people owning more land and being spread out more as a result.
Of course, this doesn't excuse the fact that some dense towns in the US a few miles from a major city still have to deal with shitty broadband because no ISP is willing to invest in hooking them up to FttH. On average, though, the US will probably do worse than Norway for the foreseeable future because of the difference in where and how people live.
But yeah the bigger issue is that often even in urban or suburban areas, the internet is still bad.