What's the vision that everyone will have a personal Jarvis (meaning we'll have 9 billion AI agents in the future) true?

I’ve been thinking a lot about what the world will look like when AI agents become truly mainstream. I believe that, in the future, every person will have an agent that acts as an assistant, teacher, companion, and interface for communicating and coordinating with the rest of the world. I once read a prediction that today we spend roughly 80% of our time interacting with people and 20% interacting with computers/AI. In the future, that ratio could reverse. We may spend most of our time communicating with AI agents-planning, scheduling, learning, and coordinating-while reserving human interaction for the moments that are genuinely meaningful. That future may sound dystopian. But many technologies we now take for granted once seemed dystopian as well The question I keep coming back to is: if billions of AI agents are coming, what infrastructure will they require? What will be the biggest technical bottlenecks, missing layers, and business opportunities? And what should people who believe in this future start building now, before mass adoption makes the need obvious?