I think it's a relevant and legitimate thesis that this is in part caused by the origin of the major data capitalists (please explain why they are voted down).

I think it is fairly widely believed that the USA government favors US-american companies. The EU might do this less, but would have a clear economic interest in doing so, so I find this very plausible as well. I don't know how many smaller personal data companies there are in the EU compared to the US, but the major ones you hear about (Google, Facebook) are definitely in the USA.