It's not immediately obvious there's anything new or interesting in there: how is this heuristic different to a classic Hansonian bet [1]?
One potential advantage is that having "skin in the game" has a more positive connotation than betting on outcomes, to the general public at least. Regardless, Hanson at least deserves a mention.
From a stylistic point of view I'm not a big fan of the appeals to authority (e.g., "the ancients were fully aware" ) either.
From a startup perspective it's worth mentioning that mentorship or advice is also generally more confusing and less useful when the mentor lacks "skin in the game". Hence mentor "whiplash".