"The fact is, it's not really used much in the legal economy now. Yes, one rich person sells it to another, but that's not a final use. And without that it really doesn't have a long-term future."
Sentences like this make me think the author is clueless. That could be said of any neutral storage of value, like gold.
Btc is super convenient compared to gold, and transacting with it can't be easily shut down by anyone. Seems like that is all btc needs to be. It could be more maybe, but that is hardly a requirement for it to be successful.