> Machine learning, cryptography and decentralized communications.

Those alone have the potential for incredible changes.

Potential, they haven't changed important anything yet.

Probably not cheaper anymore, considering this year's supply chain faults.

We didn't have smartphones little over a decade ago.

Yes the difference between 15 years ago and now is noticable, but not so much in the last 10.

And smartphones didn't improve much after Jobs died. 120hz display and wireless charging is all of the innovation in last 2 years. Smartphone is now just a fashion statement and not really a technology.