This is why I get
SO frustrated with these forums.
People read what they want to read, or intentionally twist things. Where the F*** did I say you only need 10k to try to play blackjack supporting yourself?
I simply relayed the circumstance of my younger brother's first year playing red chip level
to gain some experience. BUT he was NOT supporting himself at that point. I was supporting him. He lived rent free. Hell he was on my car insurance at that time (he still is, but now he pays his own portion).
To try to support yourself from blackjack card counting play, which I am not recommending....never have....never will....hell I even tried to talk my brother out of it....but if you are going to try to do so, you need to play at least green chip to black level. And to do that, you probably need 25k minimum. That would allow for spreading green to light black safely (with a reasonable RoR).
BUT, and this is a big BUT, that would be if you are living at home or somehow otherwise have very minimal expenses. If you are intending to immediately be taking money from BR to support yourself, I would double that to 50K bankroll needed! Maybe you can get by with 40K, if you are willing to live very frugally. Basically, you need to have enough money to live for a year, if you hit one of those elongated periods where you don't make any money for that year.