It's not just demographics.
People tend to make social abd economic connections over time, and to be actual mover and shaker you do need key supporters.
That's where democracy also fails. The shorter you're around, the lower chance people heard about what you've done and who you are, no matter how good or bad you are at something.
(Same applies to functionaries often enough.)
But young people, who are more ambitious and less established are also more willing to take a chance on young and ambitious people. I don't see how this is unconnected to demographics.
That's where democracy also fails. The shorter you're around, the lower chance people heard about what you've done and who you are, no matter how good or bad you are at something. (Same applies to functionaries often enough.)