I feel like this was the promise of voice assistants like Siri many years ago, turns out they currently still have issues turning on / off lights reliably.
Alexa used to be better, but only yesterday I asked it to flip a coin.
"I've added flip a coin to your basket"
???
I asked again, and she actually flipped a coin.
That's why siri and Google are driving their assistants into the ground with "by the way"
If someone would nail voice assistants that would be a bit selling point for their platform and it's a good way to get people into their paid services too.
Not really sure what you are referring to with driving the assistants in the ground, from what I can tell it's just not very good tech ("one moment", "working on it", "there was an problem answering this query",...) and not related to any monetization strategies.