Oui mes empreintes.

It's a very complex answer, but in short, no. You don't own anything.

Even if you buy a CD or record you own the medium and the right to reproduce the content, but you don't own the content itself. Hence why it's illegal to make copies or commercially reproduce content. Same thing with electronic devices. You might own the hardware itself, but design of it is copyrighted and software you only get the permission to use.

I do.

Only if its still there and you can use it entirely when internet goes bye-bye forever

Do you?

I own lots of content, because I created it myself.