The same has been said about every information technology back to at least moveable type. The people who own the press will get to decide what everyone reads and learns. If there is 1 or 2 sources with aligned incentives that is true. As the hardware and models become more available more people will get to run their own. Now who can print? Nearly everyone.
Already nation states in conflict have competing models aligned to their desired population knowledge. I can easily switch between an American model and a Chinese model and even have them critique each others responses.