They don't need to buy out any ETH fuel and would likely not take that course ever as that wouldn't leverage any control. They don't need to be a customer buying overpriced cpu cycles , they want to make money selling other fools overpriced cpu cycles by controlling the tech with IP control. Any potential Buyout would be of the Ethereum Foundation or the developers therein. In such a case even this is unlikely because they need to set a legal precedent that they control the patents and technology to smother ethereum clones that exist now and future ones... So instead of the honey going to Vitalk and other owners of the Ethereum Foundation(not you or other investors) , expect the stick...