Let's assume there are 10k active full nodes, and 85 percent of these nodes are concentrated in one country. What is the implication?
- Will it mean any form of centralization?
- I think the major concern should be if the government of that country rises against bitcoin mining
Centralization and redundancy goes hand in hand. If for some reason, a certain country experiences a natural disaster or any form of attack that disrupts the internet connection, electricity, etc. You would see a pretty big drop in node count. It wouldn't pose as a critical threat but it is certainly not what we want.
Bitcoin mining and running a Bitcoin node is quite different. Latter is harder to crackdown.