Re: And then billed 3 extra hours?
"Biggest con I reckon with PCs was the so called "turbo" button which was nothing of the sort. It was actually a slow-down button for app compatibility."
...Yes, but everybody knew what it was and what it was for. Calling it "Turbo" was marketing, not deception. They had to add it for backwards compatibility with programs written for the original PC designed with delay loops that depended on the CPU's clock speed.
The computers would have been cheaper to build without the 2-speed design. Not much, but it was a temporary fix for a real problem that the motherboard guys had no control over.
Calling it a confidence trick seems a bit odd.