Encryption is not a crime, encryption protects all of us. Encryption, and especially end-to-end encryption, is an essential tool to protect everyone online. Attempts to undermine encryption are an attack to our fundamental right to privacy and an attack to our inherent right to security and safety.
People used encryption for commercial purposes since Antiquity.
If your point is how it mostly was right “before radio transmission” - that latency would break civilization. You’d have to send messengers with safes for correspondence. The contents of which would be encrypted.
By the way, in those days nobody in their right mind would suggest banning encryption. If you need to read something - get a court order to read it first, if you read it without that you’ve committed a crime and it’s not admissible. If it’s encrypted, you could get the court to demand someone to decipher it, if it’s certain that they can.
A lot of steps, see, to not infringe on private life.