That’s like using someone’s face in an app and then saying “how can you steal pixels?”
Or rather, what does “ownership” mean? What does it mean to own light waves? What does it mean to own sound waves? Etc
You can get all existential about it if you want - I just know that if someone used my face or my voice to shill for a product without my permission i’d be pissed. I’m pretty sure you would be too.