I think if you have the foresight to see a multi-billion dollar opportunity, and you're behind schedule, then you do everything in your power to grab that opportunity, including vaporware.
If they actually had the software already...
No one sets out to lie. Gates would've preferred to demo the real thing. But in the context of that market, "we'll release that in two years" is worse than vaporware if you want to actually own that market.
