Of course there is a distribution of talent in any industry and geography. However, in my experience, there are dev cultural attitudes (especially DIY-ness) that make Eastern Europe and Russia ideal for hacking.

Example: I had a relatively complex ticket with a new dev to my team located in Russia with sparse documentation. I scheduled a call to do a deep-dive how the system works and I got a rather laconic reply:

"Why need call? I will read the code."