Thanks for clarifying that blocksize controls only transaction volume. I get that now. I didn't when I made my original post.
I think, still though I'm not articulating my point well enough. Fiat currency fails 100% of the time because it is controlled by humans. My understanding thus far was that bitcoin was controlled by physical limits in the real world, that of electricity, compute power, ultimately: Math.
Now, here, we are not talking about the supply of bitcoins themselves, but rather, the number of transactions with them that can occur.
That too is a factor in the value of a currency. It's not just the supply of currency that affects the value, but whether or not the person receiving that currency believes in its value, in this case, they must believe they can themselves use that currency to conduct future transactions.
It is this belief, in the case of bitcoin -- transactability for the lack of a better word, that is controlled by human beings -- and this is the same failing that has caused the collapse of every fiat currency in history prior to the US Dollar.
Now I'm learning that bitcoin has not solved this problem and I can't understand how bitcoin will survive this failure.
For a money to survive, it must be bound by physical laws beyond the reach of humans to change. It is human fallibility that is the culprit behind all fiat failures in history. We must invent a currency immune to the decisions of humans to solve the problem that has plagued fiat throughout history.