Microsoft did in fact have massive dominance over mail with exchange and they absolutely had an army of loyal devs developing active server pages, com object embeddings and a bunch of other non-standard features.
Your point is taken and google is of course a monopoly. I’m saying I don’t think browser stickiness will be that persistent. I could of course be wrong.
But all of the google services you mention work jsut fine in competitor browsers for the reason I mentioned (they have to, in order to work correctly on mobile devices etc).