They killed people they felt threatened by, and that they couldnt use. Teachers, doctors, authors, scientists, philosophers, social critics, journalists, midwives, artists, performers. Those are the people that died at the hands of Mao and Kim, not the capitalists whose wealth they both needed. Mao was all about investment into collectivist systems, one of the biggest factors driving The Great Leap Forward was the need to quickly develop new sources of domestic investment. And the DPRK is just a corrupt Juche system, they love foreign investors (and holding them for ransom!). Just because a few people you don’t like incidentally died in the purges too doesn’t mean they had “the right idea”, and it’s sickening to see you spout that revisionist BS here.