If there's anything that's worrying it's how eager people are to misunderstand the article in favor of their own preconceived notions. This isn't about competing with SV as a startup hub, but about European companies being about compete with US companies in the local market. Which is a very real problem. Europe (at least northern) is probably the easiest place in the world to start an Internet company. And we're also…
Cost of living. SF is far more expensive than anywhere in Europe, including London. This immediately ratchets up the burn rate.
Red tape. Whether it's a Delaware off-the-shelf incorporation or something else, sooner or later you're going to have to deal with the IRS. From previous experience that's a world of pain.
Health care. I don't pay for it here. I'd have to pay for it there - and pay a lot.
There are advantages too - immediate access to a huge market, mostly speaking a single language; lower sales taxes; networking and culture; weather (although cities like Barcelona which are comparable).
Access to talent is roughly equal. Certainly there are areas in Europe where developer standards are reassuringly high.
The real difference is that SV has a strong start-up tradition, while Europe has an industrial tradition of bigger and more established concerns, and start-ups seem to happen more by accident, often in waves - like the home computing wave of the early 80s, and the current tail end of the app+game wave.
Europe could certainly do more to improve that, but it's not so impossible to make things work here - it's just the challenges are different.