I don't mean they hold the cash, I mean they "write a note" that you have deposited $2000. So they know they can give it back to you at some point. If that makes it better I don't know. It was supposed to be a simplification anyway.
The issue with Bitcoin is that you current kind of need to know about how it all works don't you?
You don't need to know how it works, you just need to download some software on your phone, or buy a hardware wallet, and then buy some Crypto from some place like Coinbase. Sending/receiving crypto (specifically Bitcoin or Ethereum) is actually very easy.
The real issues right now are:
1. Buying crypto in the US requires giving private info to 3rd party companies you may not trust (I wish my bank sold Bitcoin) or using a Bitcoin ATM, which most people would be hesitant to use.
2. Storing coins on your phone wallet has more risk than using Apple Pay or a credit card.
3. If you use a phone or hardware wallet, you have to maintain your mnemonic phrase, or if you lose your wallet, you lose all of your money.
4. Prices aren't stable, and people generally want their currency to be stable. In some countries, crypto is more stable than the local currency, but in the US, that isn't the case.
These things can be made easier, and hopefully financial institutions get on board and start providing crypto access with means of securely storing your mnemonic phrase in a way that they can't access without you.
The issue with Bitcoin is that you current kind of need to know about how it all works don't you?