According to
this article, PwC hired 400 blockchain experts in 2018:
Rival PwC said it had taken on a similar array of clients and currently employed about 400 "blockchain experts" globally, across multiple divisions, including its consultancy business.
And that's just one company. That number doesn't count those working for other companies like EY, KPMG, Microsoft, etc.
My question is, where do these companies find them? What qualifies someone to be a "expert" in this field? Given that the cryptocurrency community is still a fairly small and nascent one where everyone knows everyone else, the actual experts tend to be well-known figures, and Bitcoin degrees aren't really a thing yet (other than the one or two rare exceptions), how was PwC able to find 400 of them?
In fact, the number of people who have contributed code to the Bitcoin codebase over the past
decade since Bitcoin has been around is only about 500. For Ethereum, it's only about 300.
Or do these companies just treat anyone with a computer science degree to be an expert? (Heck, I'm a computer science student. Can I be a Bitcoin expert too?)