[logicchains]

>And we should assume that there is an infinite number of industries for humans to constantly move onto why?

Because humans have an infinite amount of wants/desires they'd be willing to pay for if they could afford to hire someone to do it. Practical example in Australia: aged care. The baby boomers, the richest generation, is rapidly aging, so one of the biggest growth industries is aged care/nursing.

[wvenable]

Aged care will be a growth industry for another 20 years or so and then it will decrease rapidly.

The same thing happened with the tennis industry 30 years ago -- Boomers loved tennis until they aged out of it.