I think nobody can control or own the bitcoin system like they can not control and possess the technology by email and the internet. I think Bitcoin is no different than a mobile application or program that offers a personal Bitcoin wallet and allows users to send and receive Bitcoin.
One of the common concerns of other people here is the bitcoin system because the most questions is the person who's manipulating the bitcoin. Experts keep on saying that it is anonymous but the scary thing that other think is that what will happen if there will be a corrupted at the protocol level. Indeed, it is programmed, but as far as I know it is anonymous.