Blocked by: SponsorBlock
Next?: YouTube making it harder to skip around video
Blocked by?: Zoomers just alternating between videos, cutting in and out while the ads “play” silently, because they can never get enough dopamine
Even the concept of "changing the channel" is something to eventually lock down in this way; don't let the users change tabs or modify the window or display state at all until trusted ad content has verifiably finished.
The saving grace is that you'll probably be able to just get up and walk away until it's done, at least for some time.
There has to be a reason why they haven't done that already. Perhaps they haven't worked out a reliable way to track ad impressions in the continuous stream. Perhaps they got it working but it's too resource intensive at scale.
Given the magnitude of revenue at stake, the other shoe should have dropped by now.
You know you fail when you gimp your free service and allow users to ungimp it for cash, while someone else ungimps it better for free.
Big corps never understood this, with Valve being the only counterexample I can think of.