While no company 'owns' BTC, the miners control it's transfer, and therefore exercise control. AXA has been pointed to as a controlling entity of BTC, and it is demonstrable that the day the future's market for BTC was initiated the crash of BTC value began.

Yes, BTC is presently centralized, and further, the exchages are chokepoints that enable legacy financial mechanisms to specifically target users that exchange BTC for fiat.

Absent decentralized exchanges, crypto is captive to legacy financial institutions. Absent nominal mechanisms to limit the ability of substantial stake to exercise governance, Steem remains subject to Sybil attack. These are just the facts I am aware of, and not what I advocate.