HN/BitcoinTalk/etc, suffer from extreme (pro-crypto) filter bubble. The average man/woman on the street ("society") could care less about Bitcoin/Ether. Just look at the whole Net Neutrality debate.

Bitcoin/Ether barely register in terms of the total economic activity (75 Billion $). With significant fraction unusable. They will either be tamed or destroyed.

In fact another way of looking at cryptocurrencies is as a revolt against the Visa/MasterCard duo-poly & regulations that has made digital transactions too difficult. The moment digital transactions become cheaper/more-efficient, the allure of crypto-currencies will disappear.