Is it really possible for someone to be robbed 3 times?

Emotions and expectations, and in some quarters, hate.
It's funny when people argue that Marquez should get the benefit of the doubt on this third one because Pacquiao already won the questionable decisions/scoring on the first two.

Also, that Marquez didn't have to bring the fight to Pacquiao because he is already old, or his style is a counterpuncher, etc. When it is a known and accepted practice that you have to take it to the champion to win the fight, don't just match but surpass it. But exception is being applied in the Pac-Marquez fight.