Good news: your centralized pie where you’ve put in tons of time, and built up a huge amount of credibility is safe!
Cryptocurrencies/blockchain shouldn’t, and likely can’t, “disrupt” most of those industries. A glance through some of the industry reports in the comments shows an immense amount of work done in these respective industries. The value is in the edges.
The important thing to think through, critically, is how we’ve organized ourselves as a species, and how that orientation has changed over time. Do cryptocurrencies / blockchain offer a superior way for individuals to organize themselves around a specific network? There are some interesting questions there, and I think if we can answer those questions, the interesting applications will emerge. Right now we’re thinking of how to slap Web 2.0 onto blockchains, which, though interesting, isn’t going to bode well for anyone. Because the status-quo is superior (from performance and pricing perspective), and works well for most.
Store of Value, currencies, and financial instruments are appealing; those are applications in which humans have to orient themselves around a centralized power structure and believe. Switching the focal point of trust from a large institution (or government) to a decentralized network is an interesting thought exercise. Also think DRM.
Folks are comparing things to the 90s, but that’s a tired dog. You’ve really gotta look before that. We’re still in the installation phase, and I don’t think we’ve quite gotten to the dot com phase of this journey. That level of frenzy is yet to come.