As an example, take the NBA. The NBA does feel like it is about as perfect as it gets when it comes to being a real meritocracy. It doesn't matter so much who your connections or parents are, if you can't win on the court, you're out.
But what happens if the whole economy was like the NBA, where the very best of the very best made millions, and everyone else is left to make minimum wage selling concessions. Well, if you're a scrawny 5'4” dude, you know your options are hopeless, no matter how hard you work, and you just may think "Fuck it all, burn the whole system down, I'm screwed in any case."
I don't believe the whole economy is like the NBA, but it's gotten much closer to those dynamics over the past thirty years with the huge concentration of wealth, much of this due to technology being able to reduce the number of "winner" slots be increasing the size of markets.