Large companies (those that are not tech-centric, e.g. financial services, etc) still tend to see it as a back office function and often outsources majority of operations to India (or fly and settle temporary employees locally). Companies that places tech at the center of their business recruit and hire a lot of tech talent from outside of Western Europe. There are also local developers, but their pay, compared to jobs in, say, marketing, sales, and other rather fluffy business functions, is low, low, low. Someone mentioned Bookings before. Their pay is on-par with the market average here, which is 50-80K. And that is very low compared to how a similar position is valued in SV.
Startups here in general also underpay their tech workers compared to counterparts in the US, since they point to the large companies locally (which already underpay tech roles), and say, "well, we can't afford corporate pay, we are just a startup". So you are kind of double-underpaid, even though the job descriptions are usually copy and pasted SV-speak with rainbows and unicorns.
Being an excellent engineer, the backbone of all good tech companies, is rarely recognized, poorly compensated, and engenders much less social status than if you were on the US west coast. Ironically, even though there are many highly talented engineers in Europe, European executives and investors frequently hold American engineers working in Europe in much higher regard and treat them differently than engineers from their own countries. I've seen it many times.
This is not an environment that incentivizes the world-class native engineering talent that exists in Europe to perform up to their abilities in a high-risk startup. Good engineers correctly view themselves as being undervalued, so there is no point in taking the risk. Nothing will change until Europe places more value -- economic, social, and cultural -- on being an exceptional engineer instead of treating them as a modern day factory worker subservient to the managerial class. This is not something you can easily change with government initiatives.