I don't think that any company or institution is really likely for a control of the bitcoin market. This could have happened in the past when the price for 1 BTC was still relatively cheap, but now around the 30,000 USD level it's way too expensive for any single entity to acquire large amounts of Bitcoin. I mean the whole concept of crypto currencies is that not one person is in charge and the system is decentralised. Having now one institution taking control over the largest crypto market would be devastating, if it would be even possible. As soon as word would get out that one institution is buying large amounts of BTC, the price would jump up quickly and the cost of buying more coins increases. Another question would be, who is willing to sell his precious bitcoin to someone that wants to control the market? I would rather keep my coins instead of giving them more power.