There are plenty of poker players who play professionally and the bank roll management aspect of the game is an essential part of their job. Which is why at the highest level you'll find quite a complex ecosystem of players selling stakes in themselves to each other to lower the variance.
So the meta-game of poker is betting in your own competition as in buying shares on their possible (winning) stake.
That sounds a cool story either for a Doccumentary or maybe a webapp to easily manage that on the lower ranks where informality and everyone knowing each other might not be true?
No, this is a misunderstanding. It's about balancing how much you invest in today's game with how much you invest in tomorrows game. Preventing an unlucky streak from wiping you out and all that.