Once you introduce money into your creative work then it all becomes about the numbers. If your income starts to diminish then you worry if your work has "degenerated" and you may do things that you wouldn't normally do to get your income back up. The hard thing is that you often have no idea, without doing something obvious, why readership increases or decreases. Marketing might help, but I've seen some pretty aggressive marketing campaigns fail outright. It seems to have a large luck factor beyond any one person's control.
Those born into connections of course have an unfair advantage. Think of all the people you know who would not have received a nanosecond of airtime if their parents, cousins, spouses, siblings, etc., were not already famous.
The game is a little rigged, but not intentionally so. People generally look after their own kind.