You can run a farm on a mobile broadband connection if you're mining on a pool. And that won't change.
If there are cell towers 200 miles from Gnome, Alaska, I am not aware of it.
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Mobile broadband was probably used as in "slow."
Quick search tells me that there are at least 2 internet providers in Nome, Alaska.
In my (unlerned) opinion, "decentralization" is no longer an issue, that bird has flown.
OMG - you envision a fee market (long before it's neccessary), but you can not see the commoditization of mining equipment hence re-decentralization of mining!?