Blockchains are just starting. There are major innovations under development right now that will massively reduce the energy consumption, and increase the scalability, of blockchains, like zk-Rollups.
What is a good reason that cryptocurrencies have seen practically zero real-world adoption in the same approximate timespan that Twitter, Facebook, YouTube, et al managed to integrate deeply into our societies? And of course by adoption I don’t mean HODLing, I mean cryptocurrencies being used as the currencies they are claimed to be.