US stock market is analogue of Chinese real estate market. It's full of overpriced crumbling units and overt scams waiting to be exposed.
In Europe this capital is dispersed and more often serves the purpose of building infrastructure, increasing prosperity and well being of societies as a whole and developing large number of smaller businesses priced realistically. It's less flashy, but healthier.
I mean FFS the damn Euro literally almost became worthless because of the Greek debt crisis. Did people forget how close Europe came to abandoning its own currency?
That's what happens when there's no social system for pensions. In the US everyone and his dog has to "invest" in the stock market for their older days. In Europe this is happening more and more too, but there's also still a reasonable pension system in most countries that serves this purpose for individuals.
There are simply far more investers putting money in already inflated assets in the US than in Europe.
Take Tesla vs Volkswagen (or Porsche if you want). VW sells magnitudes more cars worldwide than TSL, even just the electric ones. Their ROI is much higher. And both their innovation is just as flakey at times (compared to e.g. Volvo who remain strong leader in all automotive innovation).
Anyone who looks at the solid figures, sees that VW is simply the stronger and more boring company. Yet people bet on the future, in which TSL promises to overtake VW. And then inflates the already inflated bubble some more, praying for that promise to be delivered on.
Praying, however, is not a good way to innovate an economy.
But pension funds invest very different from Jane and Joe for their retirement.
To answer equally condescending: I presume you realize that?
Over 70% is invested in equities, the rest mostly in fixed income (bonds). Not a whole lot different than an average 401k invested in a target date fund. But the real zinger: over 33% of the total is invested in US equities alone, with a whopping 47% of all investments being in the US. Norway doesn't seem to share your opinion on US equities.
Regardless, it only reinforces that the notion that US stock market doesn't reflect true worth of US companies because it's flooded with capital from pension funds. Not only US ones but from the whole world.
In US empty company can be "worth" billions for a time.