Re: Already done?
"Where does it say Boeing expects the general public to use this?"
From the article: “What we are seeking is an 'everyone' personal flying device, capable of being flown by ANYONE, ANYWHERE. It should be a device for ALL: young and old, city-dweller and country-dweller, expert and novice.”
I'm not saying you're wrong about us never getting jetpacks, but Boeing pretty clearly state (in shouty capital letters, no less) that they expect the general public to be able to use it.