It’s been discussed here before that 9 of 10 venture capital investments fail, and so you should make 10 potential big bets to make up for the losses. So Poloneix could be one of those 9. Why do you assume there are assurances?
Yes, big dumb bets and Theranos-type due diligence exist, but I'm just saying my own estimation of it. "Assurances" might be too strong a word, maybe more like "not-unfavorable insider reports on regulator sentiment"