I think it's more like, look at openssl, the crypto Swiss army knife. How is a regular person going to use that? But if someone did just asymmetrical key encry

I think it's more like, look at openssl, the crypto Swiss army knife. How is a regular person going to use that? But if someone did just asymmetrical key encryption with one algorithm and then spent time engineering it so that a normal person could use it without taking Dan Boneh's Coursera class, there might be more people using PGP.