Being Google, isn't it highly likely that the price is a loss leader which will later be changed once customers are sufficiently locked in? I get that this is more convenient than doing it programatically or manually, but that seems like a reason to using something other than gmail. This approach just seems incredibly wasteful to me.
Pretty much everyone who prices out Gemini has the same question - these prices just seem WAY to cheap to be sustainable long term.
I've tried bouncing this off some Google employees and the general vibes I got back from them is that Google is very good at running stuff like this at a scale that drives down the cost for individual queries, so they seemed confident that these prices were not a loss leader strategy.
I don't know if I can believe that though. It's just SO cheap!