YouTube was a $15B business in 2019. Given that Google pays Firefox about $400M for search engine priority for its 4% market share, owning Chrome saves Google about $6B a year in payments for its 60% share. I bet that both maps and google apps for business (of which email is a core piece) are also quite profitable, depending on how cost accounting is done.

Why do you say they are in a "pretty rough spot"?