I agree, you can own your own domain name without having to do everything yourself. Like anything else, if you don't want to do something, hire somebody else to do it.

I own my own domain name, and then pay others to take care of my website. I chose a cheap one for now. If I don't like their service, I can move my content somewhere else in the future. I could even have it hosted for free on GitHub, if I'm willing to live with him there constraints on static servers.

But I own the domain name, so no one can just take it down without any recourse. If someone decides to stop providing me a service, I can just take my stuff somewhere else.

Of course, you have to have a backup of the data, and use tools that are available elsewhere. But that really isn't that difficult. Static sites are really easy to manage this way. If you want something beyond the static site, it's not hard to use tools like WordPress which are open source software and widely available elsewhere. (Be cautious about adding plugins to Wordpress, some of them are security disasters, but at least you get to choose what you use.)