The same half dozen vertical slices or renders have existed for years so why have exactly 0 been realised as games?
Already covered above. They likely prototyped it and it didn't monetize well or something so they axed it.
Because they aren’t games they are bait and switch adverts.
Or they're neither, and they're just trying to gauge the market. But sure, you can believe whatever you want.
There’s no market research campaigns and you’ve provided no fucking evidence for your claims at all.
You haven't either. You're just assuming a) the worst and b) something that makes objectively less sense - if your whole premise is they're advertising something fake, how would this even work as bait and switch if people see that's not what the ad links to?
Your thesis is bunk and I think so are your claims to be a dev too.
And your thesis is "I feel like it's bait and switch, so it is" and you have no claims of credibility. Nothing I say will prove to you that I've worked for some of the largest corporations in the US, so I can't change your mind.