If chartered banks charge for ... holding cash ... don't people next create a new industry of unchartered financial institutions to hold money without charging so much? Like, safe deposit? Or insurance? This seems like an ivory tower exercise that has not yet met the messy realities of the world.
My understanding is that Dutch banks already have negative interest rates. They charge a negative interest to large account holders (over 1M euros) and a minimal positive rate for less wealthy clients. In reality I suspect that few end up in the 1M+ category since you can spread your money and keep the rest invested in the stock market or T-Bills if you really want security.
I don't have that much but mind you, even at a slight positive rate (like 0.1%) you're already losing money every year due to inflation!
It's really ridiculous.. My confidence in the banking system is super low. I feel like they're just screwing us with the ECB's blessing (who initiated the low interests).