As enthusiastic as I remain about the overall premise of equity replacements issued on cryptographically secure ledgers (including Etheruem, which I started with by running the educational channel Ethercasts), I don't see anything in this presentation that indicates that the massive challenges regarding nation-state regulation have been solved.
Even were one to go on the premise that one can effectively run this in a sandbox away from standard nation-state regulation, one has the more general problem of enforceability of contracts, etc. If I hire you via a crypto-contract but then you don't deliver the associated goods, what recourse do I have?
This and related effects caused ~2 years of delays in my own implementation.
I'll note I remain optimistic and positive about all related efforts in this field.