Way back in the mid-nineties, when the aw-shucks drawl of a charismatic Arkansan named William Jefferson Clinton was the reliable soundtrack of the nightly network news (which people actually used to watch!), one little known entrepreneur was casting about for a name for his new online retail business.

He first landed on “Cadabra”, presumably an uninspired play on the magical mainstay abracadabra, and went so far as to…