Debatable. Everyone loves to take credit for the invention of any revolutionary innovation. And indeed, credit can be spread all around.
It's like Europe claiming sole credit for the invention of the PC because Alan Turing was British even though Americans invented the integrated circuit and actually built the first viable PCs.
First you make an absurd statement as absolute fact, but now its "debatable". It looks to me like you are backtracking. HTTP came out of CERN... what exactly is it you want to debate about?
It's not an absurd statement, it's the truth. Europe can't compete with American web tech (and probably even software in general). Think about it. In your day to day dealings with computers, what percentage of the software you use is American/European? I'm betting it's something like 99:1 (unless you try to make the claim the Linux is Finnish even though the majority of the developers for it are American and the creator himself is an American citizen). Compare to cars, which are more evenly split between countries (Japanese, European, American, etc.).
I'm not backtracking on that argument.
OP made a poor attempt to excuse Europe's lack of competitiveness in the software/web tech scene by waving their hands and saying "We invented all of it" (which is highly debatable). Claiming that Europe invented the web because HTTP came out of CERN and some European person envisioned a global network is bogus. Those are only tiny parts of what make up "the web". You conveniently sweep ARPANET, TCP/IP, and other core web technologies under the rug.
Most software and languages I deal with are open source and the names I see associated with them seem very european to me. Im also pretty sure that these are the same tools that my fellow american developers that you are putting on a pedestal use as well. Just walk away, you really are backing yourself into a corner.
I would say about half of the stuff on this list was either written in Europe or by Europeans that learned to code in Europe... and I didn't really have to try really hard or pretend, but by all means keep clutching to your silly nationalistic pride.
https://www.quora.com/What-is-Facebooks-architecture-6
It's like Europe claiming sole credit for the invention of the PC because Alan Turing was British even though Americans invented the integrated circuit and actually built the first viable PCs.