Getthese right on the $ here , literally

Po understood the game and would of let Rich take a small servicing profit - say $500 a K but when he found out that number was $1500+ and he did the math

30 K a month x $1500 per K is over $500k a year & he flipped the fuck out , as he should .

Given their tight friendship Po could of stepped to him first but chose not too ( the $ math prolly F'd his head up where he couldn't let it go ). Who was right depends who you like more and / or how serious you take the game but Po was fully justified in killing him based on how he saw things at that time ( he was targeted for killing and robbery a bunch of times and I'm sure got beat several times ). Po was at the death level part and did what he had to do but afterwards and prolly still feels bad about it , especially now that he out of the biz and thinking differently .