Your first mistake (of many) is your assumption that value of assets is based on it's current use, where in actuality especially for small caps 99% of it is based on potential think WhatsAp, twitter etc... The other point is just because you can't think of a solution doesn't mean no one else can. In my opinion raising transaction to 0.25 USD/tx would be equivalent of shooting a fly with a bazooka. But the funny thing is, even in that worst case, I think bitcoin can still prosper.
I explicitly said "
expectation of
future usage". That was THE selling point in Nov/2013 when I first learned about bitcoin.
And I also did not say that the "proper fee" question is unsolvable. I said that there is no solution (known, or within sight) and that it would requires another brilliant invention.
(Without some automatic and economically sound fee adjustment mechanism, a workaround would be to have a governing body like the international commission that defines and updates (by voting) the Metric System: with no legal power, but with effective moral power derived from competence and representativity. But try telling that to the libertarians...)