That’s the advantage of the 2 party system. There is no other way out except revolution. In most European countries there is still an irrational but valid hope for regular reform through regular political means. Those countries are fated to linger on like this a little longer.
When it’s based on emotions or tradition. “We’re too big to fail” or “We’re the best, so we’ll get there”. Those are good motivators, but completely unbased