I think there's an assumption here that needs to be addressed, and that's that Google functions as a single entity with consistent and coherent policies and actions across all its arms.

Just because something is not in the best interest of Google overall or long term down not mean a small fiefdom is doing something different for their own self interest, even if only temporarily until it is eventually discovered and corrected.

For example, almost all your statements about Google above are incorrect for at least one business they've been involved for, for at least part of the time they've been in it. Often it's easy for find multiple counter examples.

As a whole, Google follows those statements you made, but for any specific business they are in I wouldn't make a blind wager about it.