IBM was a master of this: Get a customer cornered and then bleed them. There are modern versions of this, too (Oracle springs to mind). "Nice business you have

IBM was a master of this: Get a customer cornered and then bleed them. There are modern versions of this, too (Oracle springs to mind). "Nice business you have here. It 'ud be a shame if something were to . . . /happen/ to it? Right?" "Right, boss." "Shaddap, I ain't talkin' to youse." It's a successful, ancient business model.