it depends, kodak had the choice to adapt/evolve and become the 'canon' of today's digital photography, but they didn't.
similarly WU could adapt/evolve and become the tradehill / mtgox (without the goxings!) of 2026.
just depends on whether they embrace change or not.
Its hard to embrace a technology that tries to thrash your margins and replace you. They may evolve, but it is a bit of the gun to the head situation.