Now, flying them over other people's property or over a city is, and should be, another story.
It's not "one of the most dreamed of forms of flight – jetpacks" if you can't fly around town.
For jetpacks there is an additional huge problem with safety flying over inhabited areas. Unless the jetpacks are meticulously maintained and inspected, we would see people falling out of the sky on the daily. Taking the maintenance state of most cars as an example, it seems safe to state that it would be infeasible to expect the general population to keep their jetpacks in an acceptable state.