I agree that nothing is truly passive. Everything involves some form or another for maintenance and triming what I would call "entropy".
There are some lines of business that really is very passive, but those either don't have much of a moat or competitive advantage and can easily be squashed by something newer, nicer and better.
There are some lines of business that really is very passive, but those either don't have much of a moat or competitive advantage and can easily be squashed by something newer, nicer and better.