This is patently untrue and disingenuous. Of course people want to play these games.The hype did exactly what it needed to do at the time. People just wanted to see those three games announced on the stage over the actual finished products. It was the opitimy of hype.
What you are referring to is "announcement hype", and it just so happens that 2 of these games people didn't believe could ever be started products, let alone finished products. They could have been revealed at separate conferences and people would still be hyped. One game was hyped a lot post-reveal and has already released in 2016 - most critics (and I'm assuming fans) were happy with it. The 2nd now has its chance to get people hyped with a proper showing that will be in a few days and a few more months of proper marketing. The last one... who knows when Square Enix will decide to sort that project out and get it into our hands.
Many of us want to play them all, not just be shocked at a conference.