Do you really believe B Gates and W Buffet made their wealth without armed bloodshed? I find it hard to believe that we are supposed to solve problems simultaneously adopting high moral accountability while also turning a blind eye to those who invested in and profited from the defense industry.
I think he means direct armed bloodshed as he was comparing them to the kings of old who would conquor with armies.
The author directly says capitalism is bloodshed in general whether it's profiting off of the defense industry or just exploiting people in foreign countries for iphones.