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"One of the greatest things the tech industry could do to decrease the economic inequality due to location would be to embrace remote work. Imagine what even having 10 developers living in the village could do for its economy."
In rural areas I think you have to start thinking more concretely about what "economy" means. With smaller populations things are much more micro than macro. One huge difference between rural and urban areas is that people are much more self sufficient, which makes economic numbers difficult to compare. For instance somebody with an income of $5,000 is generally going to be living a pretty miserable life in the city. On the other hand that can easily be more than enough to live extremely comfortably, even given comparable costs for what's purchased, in a rural area. And the reason is self sufficiency.
In a rural area that person likely already owns their home (80%+ home ownership in rural areas [1]) and activities come entertainment like hunting, fishing, and agriculture can provide immense amounts of resources. For instance just a single large whitetail deer can easily yield more than 100 pounds of edible meat. A single catfish and you're looking at 5-10 pounds of food, and so on. And the overhead costs there are completely negligible. The hunting license costs way more than everything else combined (once you already have your guns, rods, tackle, etc). Get into things like raising chickens and pigs, and you literally will never have to pay a dime for food again if you don't want.
$5,000 ends up meaning very different things, even if we ignore localized inflation. It's just you don't need to buy as much. Of course the corollary there is that notions like "economy" start to mean different things. If people don't need, or want, to buy as much - then economic growth is not a very good indicator of how well a place is doing. We take the view that people must not only constantly want more, but also buy more, earn more, and spend more. Growth, growth, growth! What of people that are, "Nah - thanks, but I'm okay with what I have"? So now we stick a guy earning 6 figures into the middle of all of this. I'm not really sure his effect is going to be, but it seems a bit simplistic to simply immediately equate more money with success.
[1] - https://www.census.gov/newsroom/blogs/random-samplings/2016/...