> PG argues that the crazy idea should be taken seriously predicated on the person having deep domain expertise
Depending on what you mean by "seriously". It's not that a crazy idea by a domain expert is certainly the future - but they might be right 1 out of 10 times, compared to a crazy idea by a nobody who might be right 1/1000. Given the potential large return of crazy ideas, it's worth the time to investigate in more detail.
How exactly do we identify these domain experts? This also implies crazy disruption comes from within, which doesn't explain why successful companies are the ones getting disrupted. My only conclusion is that PG wants us to trust him or that his theory is a whole lot of smoke.
I don't think anyone with deep domain experience in banking would say "Who cares if someone gets my bank account info"