While I essentially agree Musk is BSing, TAM doesn't imply "we can actually get this entire market". The TAM for the food sector is *all food*, not what one particular alcopop manufacturer can sell: https://en.wikipedia.org/wiki/Total_addressable_market

AI today can't do all desk jobs, I don't know how far we even are from that given the spiky nature of ML, but it smells like this IPO is using that as the justification for the claim.