I'm from eastern Europe. In the soviet era noone could own private property, everything was belonging to the state. Then, the state rationed food to you, allowed you to use one of their homes in exchange for labour, allowed selling produce on government-controlled prices, and buying in predetermined quantities.
So let me ask a question. When you buy a home with all your life savings, does it become yours? What makes it differ from the soviets? I mean, obviously they recorded your rights to the building on paper, and now they record it in digital databases. But is it REALLY that different? You don't truly own either. It's all the government's promise to let you access it and keep away whomever should not access it, until they don't.
The only thing you truly own is bitcoin. The rest are promises.
Capitalism gives everyone the opportunity to work hard and climb the social ladder to the top. People go to the US poor and they put in much effort and within a few years, they are millionaires. I know it doesn't sound easy the way I said it but such things happen. You can hardly find an African billionaire in Russia but there are plenty in the US and Europe.
My country practices capitalism but the land also belongs to the government. You are given a certificate of occupancy and not a certificate of ownership. But the difference is that I can decide what I want to do with my house or land with less control. I can make decisions on selling and renting the house without much influence from the government. But you still don't own it because you need permission for almost everything you want to do with the land. The difference is that in communism the control is very strict.
You are correct, Bitcoin is not controlled by any government and it gives full rights of ownership. You can move your Bitcoin to any country and still have full ownership.