My understanding is that a lot of other non-lethal technologies are under development that will make the Taser look relatively primitive. Non-lethal weapons are here to stay, but I'm not persuaded that Tasers will still be used in twenty years or so. Something better will be available eventually.
Certainly.
Green dazzling lasers, brilliant light, sound and now even microwaves are being researched and implemented for personnel control.
Of course, people will bitch in 20 years when a cop flashes them with his “neuralizer”. Maybe then there’ll be 15 annual, incidental deaths and people will forget the “bad old days” of the taser.