Hi! We've thought the same and started creating an AI Assistant that is a step further from a chatbot. Check out www.prometh.ai PS Still in early stages
As someone who has an energetic dog, I'd be careful of telling people to do this. It's a lot of responsibility, and the amount of workout and training is more time than I spend working at times. Especially if you are single like myself.
Substitution won't be so hard if only Western nations impose sanctions.
You will see countries like China stepping in, and becoming an intermediary.
Nobody dares imposing sanctions on them though, so they won't be as effective.