[Dylan16807]

A prototype is not enough to stop something from being vaporware.

Edit, to people that disagree: Did they have an even half-finished form? Did they offer it for sale?

Was it "announced to the general public but never actually manufactured nor officially cancelled"?

Vaporware doesn't always mean it's a scam. Sometimes it means there were intractable tech problems. Coming out with a fundamentally different product doesn't negate the missing product.

[lostgame]

In this sense, was Duke Nukem Forever still vapourware in the sense that it didn’t end up being whatever the original game would’ve been?

[fastball]

Except you can buy the Magic Leap One.

They promised light-field AR goggles, and you can buy light-field AR goggles.

[Dylan16807]

So there was an "original product" that was "not scaleable", "obscenely expensive" and "can't be sold as a consumer device", right?

If we distinguish the magic leap one as a different product, then from what I can see the original qualifies as vaporware.