So by your logic, if I steal something, I own it?

I've been asked to own several microservices, yet I'm not allowed to share their code with people, am I therefore barred from actually owning them?

If I have my DNA sequenced, there's a possibility that the company that did the work made a copy. Do I not own that data because of the mere possibility that they could share it with somebody in the future without my consent? Is the only way to retain ownership of that data to do the sequencing myself?

If I record a song, somebody copies it, and then something destroys the original, does the copier now own it instead of me?

It all seems very inconsistent to me. Better to just drop the word all together when it comes to data and handle each case independently.