GPG had 30 years to proliferate and didnt and only got the most rabid enthusiasts to use it.
Crypto made public private keys more ubiquitous, not completely, but much much more.
Speculation drives innovation.
Crypto made public private keys more ubiquitous, not completely, but much much more.
Speculation drives innovation.
OP: Society with and without "phones" are foundamentally different. The introduction and adoption of cryptography into daily life is at this level.
In the beginning, we probably could only attract a small group of adoptors. But the monthly active editors of Wikipedia is only O(100000) and the number of editors that actively review and "like" edits are even smaller, around O(1000). This is the scale of users that have made great impact on Wikipedia and the world's knowledge.