The problem with S2F is if you apply it to say NXT token, nXT should be worth infinity because it was an instamine and then there was no more coins issued. You probably never heard of NXT token and why would you have when its been horizontal in price for the last three years after a huge spike.
I think due to the recognition around the world, its acceptance, and a that it is the easiest crypto to trade into, creates a real use case for transferring, trading and payments. Then the limiting supply doesn't hurt.
Then there is all of the standard features such as they cannot be confiscated, cannot be frozen, you don't need a government id.
There is real adoption of Ethereum and Dash. Bitcoin Cash is getting spread out more than Bitcoin and now has more transaction volume than Bitcoin. Ether has marketcap because its a casino blockchain. Bitcoin's value against fiat is partly due to how much the fiat usecase has been hurt by financial institutions. With every confiscation (bailins), or excessive money printing Bitcoin goes up. With new financial controls, bitcoin goes up.
Could we get Proof of Brain to become something people actively use to buy services? I want to make a 10,000 POB pizza.