Silicon Valley VCs can be spineless as well. There's a lot of herd mentality: plenty of VCs who check others' opinions before deciding whether they like you.
Perhaps the difference is that 10% who aren't spineless. We may have a critical mass that Europe doesn't: a small percentage of non-spineless VCs that is just enough to get a few things off the ground. Unfortunately, the not-spineless VCs who actually show leadership and think for themselves are also inaccessible without a social advantage: you have to get that introduction first. You can't just call up Sequoia and get an afternoon with a senior partner.
"Europe" (speaking broadly, because it's a huge (sub)continent) has advantages on the ground. It's not a horrible place to live. Europe has a lot of problems, but they have universal healthcare, a culture of substance, and attractive architecture. Silicon Valley, on the other hand, is soulless, ugly, expensive, and detached from reality. I'd live in Budapest or London before Palo Alto or Mountain View and it's not even close. (This isn't an America vs. Europe comparison. I like New York and Chicago quite a lot.)
All of that said, Europe does need, if it wants to be significant in the technology game, to overcome the McKinsey/Rocket mentality that seems to exist in the upper reaches. SV's upper tier (investors) is bad but theirs is even more stifling, elitist, and detrimental (although probably less immature and obnoxious).