I don't really know many people in the industry who got where they were by being lucky instead of having the patience and intelligence to find and seize opportunities.
The latter may not be "hard work", but it's certainly not random, which is what you're implying. There are pretty commonly agreed upon strategies to succeed it in the industry, just not everyone has the willpower or patience to consistently follow through with them over a course of many years. It's not easy work, dare I say, it is... hard work after all. So not "everyone would do them". That's only assuming they're easy strategies, which they're not. They're very demanding and not everyone is up for them.
That's actually why I quit trying! I can see myself succeeding as a game composer, I'd also have to sell my soul a bit and slave away at cold emails and pay out the ass for networking events. Can't handle it. So I don't, and found an opportunity elsewhere in a different industry.
But you don't see me being cranky and cynical and butthurt about it everytime someone asks for career advice.