It may be the same kind of stagnation people faced under the gold standard; all the gold and assets had made their way into the hands of a select few people and so the appetite for risk dropped along with number of new opportunities and class mobility. Fiat money creation allowed elasticity of the money supply and thus the creation of new opportunities outside of the existing power structure. People started being empowered to make funding decisions using "Other people's money" and this facilitated investment and risk taking.
Now the issue is that the money flows themselves have been monopolized. It's still largely "Other people's money" being created and invested, but the anti-competitive dynamics are very strong. People aren't thinking about just numbers anymore (as they did with gold), they are concerned about 'rates of change' in money flows. I think that's what's driving the urge to control money flows and prevent risky spending and prevent competition. It's all about growth numbers and monopolizing growth itself.
This might explain why tech companies are laying off staff whilst having record profits and stock prices. It's about maintaining a leading position in a race, not about satisfying anybody's needs. It has become a zero-sum game about who can take control of existing money flows 'more efficiently'; meaning with less risk and less effort than anyone else. Unfortunately, the winning 'shortest path' to getting money does not align with risk-taking or value-creation.