And sometimes that unprofitable part of the business really is just pissing billions of dollars a year away with very little to show for it.

In Gmail's case, it would seem to be pretty tied into the parts of Goggle's business that actually do make money.

Conversational assistants? I don't know. They don't seem to have really panned out for the most part and I'm not sure they're much changed from at least five years ago in spite of vast armies of expensive developers being paid to work on them. At some point you just admit that a bet isn't going to pay off in an interesting time horizon.