I have my Gaggia Classic connected to a smart plug. Okay, it’s not _instant_, but I can decide I want a coffee, turn on the machine from my phone and it’ll be heated by the time I go and make it.
I know this is how many people do it, it strikes me as surprising that you don't need this compromise at the very low end (Breville Bambino), nor at the high end (Decent), but there's nothing in between