Population growth has been the result of our common drive to consume and procreate.
Nature demands as many offspring be produced as possible within prevailing circumstances. To do that, the male must be a sexual opportunist, while the female must be sexually choosy. (speaking collectively here)
This combination provides the best chances of species survival and growth — but that ‘system’ evolved when bacteria were the dominant species on the planet. They kept our numbers in check.
When were learned how to overcome them, we carried on with the same level of procreation and consumption, but too many of us survived. We didn’t stop having sex.
Which is why the planet is overheating
The ‘economics’ you speak of were driven by the need to find jobs, housing etc for growing numbers — -were were forced to consume more and more, and find more and more fuel to do so, it wasn’t an ‘excuse’. If you have a large family you are driven to provide for them to the best of your ability and means. Human nature.
I have a large extended family. 300 years ago most of them would have been dead, including me.