If I had a teacher for every subject, especially for scientific ones, I would be there every day, all day, studying and asking questions to satisfy my curiosity, even if just for a second.
But this is already possible. Everyone has free access to a teacher for every subject: we have artificial intelligence to explain topics better, books by the greatest authors who ever lived, and the internet to communicate.
The only thing that is becoming increasingly rare is the curiosity and passion to study.