I wondered for a moment whether wasted is the right word. Possibly they are honest individuals with genuine concern for the country and they did what they felt was right. If that is true, they should not be blamed for losing an opportunity, coz according to their judgement they were making the best of it. Their fighting against corruption was totally voluntary. So it is not really justified that we blame them for misjudging at a certain point and leading the movement to its doom, coz we did not elect them for the cause. We, the common people, were only going to be beneficiaries if the movement succeeded, i.e., we were there to share all rewards, but not contributors to the movement in any significant way. Of course the public support did give strength to the movement, but the public also left when it got bored.
But the opportunity was indeed wasted by team Anna, thinking from their own point of view, for whatever aspirations they had. May be they indeed want a clean political system. Or may be this whole movement was one huge show to gain publicity and build a reputation, that can lead to a direct and strong entry into politics with possibilities of fastest rise to the top. Or may be it is something else. In any case, they wouldn't be happy about the way things flopped for them after the first two super-hit shows. So much so that they couldn't even motivate themselves to fast for the cause they so much expressed belief in, and ended it all in haste, as if they found it totally useless to do it any further when people didn't care and government didn't bother.
On another note, it is interesting to understand what could be the incentive for someone to launch a movement against corruption and fight for a clean system. At an individual level, the motivations and benefits sought are generally too personal and micro to really justify a mass-movement. Still, we have definitely come across individuals who have died for causes beyond their own. Or did they internally link the cause to something their own and found a personal benefit big enough to justify embracing death? Suicide bombers, army men, social and political fighters who don't fear death - what really drives them?