Hmm, I don’t remember much, and not in his books in general. Although I am the kind of reader that’s wholly uninterested (no shade to those who feel differently!) - but it’s entirely possible it’s there and my brain doesn’t really hold onto it! But put bluntly his stories are usually bleak, romance would fit a little oddly.
I mean, are you taking your definition of “theft” from the law? Or from your own internal set of ethics for right and wrong? Is it theft if no one is deprived of anything, because bits copy, and because you’d never trade dollars for the privilege of maintaining an exploitative relationship with a company but that is all they’ve made available?
If you’re hung up on whether the legal system thinks it’s theft - I dunno what to tell ya, it obviously does.
Edit: uh, maybe you’re literally asking for how the logic in that statement works, which I read as just “if it can’t be owned, how can it be stolen?”