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.
In actual bitcoin technology is not just a app system or any site system that is using any data that we send at one side and wirtten data show at another side , but in actual there exists a type of transfer of actual data of the system .
In actual no any thing here works for direct transfer but a type of the algorithm works where many things like miners works and also another system where block system are working .
And another thing is that here we have no input and output system where we can't inject our data or any script and also there exists a private key system which helps us to handle the bitcoin containing adress only .
So it is not a simple type of system that you are thinking , it is more secure than what the banking sector are using the technology .