This author's writing style is too obnoxious for me to have gotten all the way through it, but the important thing is that he's wrong.

Every single economic transaction ultimately connects to people generating demand. EVERY single one. All B2B transactions included.

Sometimes this can appear to not be the case if there's a significant lag time between initial B2B transactions and some end consumer demand. That lag is bridged by hopeful investors and creditors.

The present AI buildout is an example of this. And it is not immune from the principle. There will ultimately need to be real people generating real demand somewhere in the economy in order to justify an economic return on the massive outlay.

Government expenditures are also included. Tax dollars used to pay for things are ultimately satisfying demand generated by citizens. Even, believe it or not, a deranged government blowing up random people in the Middle East. That still traces to the (perceived) security needs of some population.

The aggregate demand equation is as follows:

AD = C + I + G + NX

C = Consumer Spending I = Investment G = Government Spending NX = Net Exports

What's going to happen in the future is that demand will have to shift in this equation. Remember that Investment needs to be justified by some demand created elsewhere — it is in essence the purchase of an IOU predicated on future demand that must ultimately trace down to real people. We are all broadly in agreement that Consumption will contract, as labor is progressively disempowered and capital continues to concentrate. Let's ignore NX.

The answer is that the sources of demand in the future will likely shift to, primarily, (1) demand still generated by wealthy people consuming things (e.g. mansions, yachts, rockets, ego-affirming Mars colonies) and (2) government spending that serves entire populations.

This all assumes, of course, that we continue with the present economic model, in spite of the immense human suffering and turmoil that is likely on the horizon, as we transition into a fundamentally different technological age.