As a chess person, saying "Mate in _" means it's a calculated inevitability. There is no mathematical way out of it.
It is not nearly equivalent to the outside judgement of a company with so many factors — it's just incomparable.
But I can guarantee you that Google employees are reading these comments and saying "Wow, this guy is totally full of it, he doesn't know about anything!" and for some of them that thought will arise not from flaws in what I and others are saying, but in the uncomfortable space of "if this is accurate my future plans I'm invested in are not going to happen..., this must be wrong." I have lived in that space with an early startup I helped start, when I went back and worked on the trauma it had caused me it taught me a lot about my willingness to ignore the thinking part of my brain when it conflicted with the emotional part.
You have to do some of that to take risks, but you also have to recognize that they are risks. Painful lesson for me.
In chess, it's specifically used for saying "even with the best defense possible, you will be mated no mater what in a maximum of X moves." Computers use this definition as well. If Stockfish says # in 6, that means there is an indefensible path to mate available, and with the best play of the opponent will take 6 moves.
It's not a "Mate in X, probably."