"and this in my opinion only happens when a technology appeals specifically to as many members of society as it can."
Given the state of the global monetary and economic system, especially in developing nations, I'd say there is plenty of incentive for a sizable portion of the human population to start using cryptos.
Just look at how quickly crypto usage has grown in South American countries like Venezuela.
You have to understand that people already have barter without crypto. Not saying people cannot benefit from crypto but I think unless demand comes from the data then it's mere speculation. If the data from surveys, polls, actual feedback, shows that people are looking for something which crypto can feed then this shows demand exists.