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If you are referring to pool and network computation share of the pie than what you see are the results of pool participants that can easily direct their hardware at other locations if the need arises. That hash-power is migratory.
The changing landscape of the infrastructure that supports bitcoin is constantly evolving and to think the old rules apply is short sighted understanding.
Lolno. The hashpower stays where electricity costs are low/government subsidized: China.It is true that mining has been a
community service for-profit business more than a self sustaining endeavor that
would will "not" result in short or long turn profit with out further subsidies outside of the bitcoin rewards.
Fixed that.