This has been a thing for years, and so much so, that there's an entire TV with a dedicated second screen that shows you ads underneath your main screen: https://www.telly.com

Wow. I guess I'm surprised it took this long for banner ads to reach TVs.

I think I have my next startup idea: a physical ad blocker for this thing. We could even have multiple styles: yellow sticky note, duct tape, painters tape.

And if you want cheaper ones, we can print our own ads on your ad blocker!