If that's how you see the world, me going point by point is not going to change your fundamental "but only 5000 people have email accounts."
Here's 550 pages of the UK Law Commission (govt legal think tank) discussing how to integrate digital assets into UK law.
https://www.lawcom.gov.uk/project/digital-assets/
Why do you think this kind of labour is going into the digital asset space?
Crypto is a massively compelling proposition to working transactional lawyers at all levels of seniority but it's especially compelling to the most senior. They know their business. As do I.
Decades of experience doing real world transactions makes the utility of the blockchain obvious. To people without that experience, maybe the point is harder to see?
But the serious types get it. That's the lived experience in the field.