> It's simple, demand "pulls" the economy far better than supply pushes it, and we are a rotten insecure society with no demand.
I'm not sure it's so simple. In certain industries, we have a ton of demand that isn't really met: housing, education, healthcare, to name three.
But the reason we don't meet the demand for these (now highly-inflationary) goods and services is political, not economic.
1. We know how to build lots of really nice housing for not that much, but the most in-demand regions prevent that construction through the political process. Any innovation in construction tech has to contend with not just limits on construction in in-demand areas, but also requirements ("all new construction needs rooftop solar!" -- I love solar, but the costs are way, way lower at utility-scale) that increase costs.
2. High-quality, public education used to be ~free, a reality that applied significant downward pressure on private college tuition as well, but state funding has entirely dried up as costs (often non-teaching-related) have soared, in part thanks to (1)!
3. Due to somewhat well-meaning regulation, healthcare has become a disaster of hidden price signals, requiring a team of bureaucrats weeks to months to decide how much money to exchange for a service already provided. Powerful political organizations limit the number of new practitioners trained in the US,
There are good and totally justifiable path-dependent reasons why we are where we are in the three industries above. But they are now the largest category of consumer cash outflows, pushing innovation to the margins (cell phones! computers! ads!). The reason housing, education, and healthcare are so expensive is because demand vastly exceeds supply, and supply is limited by politics.