[criddell]

I think you're being too literal. I'm not the person you replied to but I've also wondered how the unbounded growth is sustainable.

[thefalcon]

Moore's Law/Kryder's Law ... advancement in technology outpaces growth.

[Twisell]

This is exactly the right mindset to build great software that is totally unable to run on modest hardware.

[stale2002]

Only if Moore's law turns out to be false.

A hundred years from now, you could store the blockchain on current day hardware. And that is without talking about improvements in technology.