After Frank had killed the McBains, there is a confrontation between Morton and Frank in which Morton states, that he just wanted McBain scared, not killed. Why did he wanted McBain scared? Later in the movie after a visit to Mortons train Harmonica reveals that there is a contract that requires a station to be built on the farm, else McBain would loose his farm. This seems to me to be a very beneficial arrangement for Morton. There is a similar...
Originally asked by user1785730 on Stack Exchange (movies) (CC BY-SA 4.0).