That kinda stuff is why I'm an incrementalist, as opposed to "Great Man" theories of civilization. A big impressive product or leap-forward is mostly luck and thousands of cascading preconditions on small improvements everywhere else, and often not even the first person to try.
It's not hard to imagine that if a fundamentally similar store today that took the world by storm, there would be a profusion of news stories asserting that the founder is a genius visionary, with nary a peep for Clarence Saunders et al.
I think that's kind of the point: there are no "genius ideas", at least not at the level and frequency popularly portrayed. If teleportation isn't feasible then the idea isn't genius. If teleportation is feasible, then using it for transporting humans isn't genius, it's incredibly obvious.
Or to give a real-world example: The Wright brothers did some great work on making aircraft steerable and doing wind-tunnel tests, but working planes were mostly a product of ICE engines finally reaching sufficient power-to-weight ratios, not of the Wright brothers being unique geniuses. In a long line of people trying to build heavier-than-air aircraft they were simply the first to have access to the necessary technology to make it work
