Comment: Why do all these parties fail?

Because they are outside the mainstream - the "folks" have never been reached to any great extent - much less converted or convinced. The no compromise - take our program exactly as it is without compromise because compromise is immoral - dooms your movement to failure - makes it impossible to ever reach the folks so the movement is doomed so long as it is so rigid - if the rigidity is a virtue to you then keep it but don't delude yourself that there is a path to victory.