So Google now starts the "extend" phase for their embrace / extend / extinguish move on email: For "dynamic email", third parties can register with Google to embed (updateable) AMP web content in Google Mail.
Sure my microwave shows me 30 second ads every time I go to use it, but I can tune it out. What do you expect, that we can use microwave radiation for free and not have to pay for it? That's very entitled of you. The microwave only has the features it does because of the money they make off of that advertising.