That's wrong. There are four real reasons:

1) our pension systems are mostly government run and on a rolling scheme (i.e. payments from current workers fund current pensioners, in exchange for future-redeemable points). That means that there is a lot less of "dumb cash" lying around in pension funds that screams to be invested for decades... historically that cash used to be put into "safe bets" such as government bonds but their returns are at below-inflation rates, and the only thing that is "profitable" is spreading out the cash over either the big tech companies or small startups.

2) networking. Just look who's in the "angel investor" rounds: people, both founders and early employees who got lots of money in the dotcom era or in the IPOs of the last years - they are all concentrated in the SV area, and enjoy the benefits of close personal contact, and then of course there is YC and a couple of less known clones which come in later. We simply do not have such networks in Europe.

3) risk aversity. Europeans do not like risk, the most obvious example being us Germans who are notorious for being risk averse, so risk averse that our car companies, 12 years after Tesla hit the market, still believe they can make "clean ICE" cars (by investing in synth-fuel tech). A side effect of that is the infamous Wirecard scandal - they were hyped so hard by everyone including our Chancellor who went lobbying in China simply because they were the only company other than dinosaur SAP who were German, were in digital business, and had (on the paper...) good business numbers.

4) "rags to riches" mentality: us Europeans have generally decent social security networks, stable government funded education - basically, you don't have that mentality, starting with young people, to "always hustle" to survive. We live mostly generally comfortable lives, but we're not driven to exploit whatever and wherever we can, simply because we don't need to.

The end result: we don't have venture capital simply because there has been no need for it for decades, it's only a recent trend here.