For one, bollocks he did, Button gave it everything to try and pass, although you suspect there was some radio talk from the team to settle them after that great patch of racing
And for two, unlike Vettel, neither of them tried to pull off a move they didn't have the space to execute. Vettel was not past Webber, nor was he on the racing line. He had the option of slowing and pulling out of the move, but instead he opted to drive into his team mate, essentially saying move or your off in a split second moment. As it turned out, Webber got to the end, and Vessel paid the most costly price. He got what he deserved