It’s subtly happening already.

“We will charge you $1 for checking your account’s balance.”

If someone develop a malware from open-source bank systems, then the economy will probably crumble in just few seconds (lol). I don’t think FOSS banking system will contribute to poorer countries where most of their transactions are done with cash. It always starts on tech literacy from FOSS enthusiasts.

I’m gonna chop my baby, and sell to supermarkets!

Same with “hawak” in Filipino.