[Steltek]

No, streaming services like iTunes and Amazon are absolutely not "Steam for movies". Those services take active steps to restrict access to my purchased content.

I can't watch my Amazon purchases in HD because I run Linux. I get downgraded garbage 480p instead.

I can't watch any of this while on an airplane because I'm not allowed to download it.

And I don't own any Apple hardware so iTunes is a bit of a nonstarter.

In contrast, Steam lets me play offline and bends over backwards to get games to run (e.g. Proton and many other compatibility tools). And my Steam Deck doesn't earn me any extra special privileges over anything else.