Though, maybe, just maybe, he was initially gonna take the money for Indio's gang, but changed his mind in the process, because he didn't want a talented young man like Monco going around his whole life as a bounty hunter.
I wanted to bring up something that I heard Frayling say. He said that DYS represents the first time Leone's characters change and grow because in FaFDM for example Manco remains Manco, Mortimer remains Mortimer. I completely disagree. Mortimer was once a rather gallant figure but his sister's death and changes in society (because of the damn trains!) reduces him to a bounty killer. He's successful but kills only for money and not for higher ideals. Manco meanwhile comes from a more mercenary era and only knows that you have to kill or be killed. At first the two regard each other as a threat. But as the movie goes along, they are forced to work together to defeat Indio's gang and by the end have developed respect for one another. Mortimer has been restored to his legendary status as a war hero and southern gentleman, and he no longer cares about the money. Manco still cares about cash but Mortimer has had a profound effect of him, he respects the older man's need for vengeance. The characters we met at the beginning would still be fighting over the reward money. So my question is: what the hell is Frayling talking about?
And DYS has far more emotional depth and seriousness than any of Leone's previous films.
Watch GBU again.
"One of the most powerful antiwar statements ever put on film"- Bruce Marshall "A Masterpiece restored" Film Score Monthly Magazine july 2004
Similar to what cigarjoe said earlier: The other changes are very minor relative to the changes in DYS. And DYS has far more emotional depth and seriousness than any of Leone's previous films.
"One of the most powerful antiwar statements ever put on film"
GBU definitely has some serious themes, but I still think that DYS is a far more seriously-themed movie than any of Leone's previous works