Interesting analysis.
If 100,000 buy 100 $HIVE and power it up, that is 10 million. That is each person putting in $50.
Here is how things move from centralized to decentralized. You are right, there is plenty of $HIVE out there. The question comes back to numbers.
If Hive has 1M users, would 10% spend $50? Hard to answer but we know it would change the potential on the governance voting a great deal.
RE: How Decentralised is Governance on Hive...?