SK Hynix and Samsung are South Korean.
The Korean memory makers are playing the same game as Micron and simply moving existing capacity up-market.
GP was referring to upstart Chinese memory manufacturers like ChangXin, who - if their yields manage to catch the wave - could not have asked for a more favorable market after the big 3 have abandoned the consumer market. Consumers who would have otherwise turned up their noses at CXMT will not have the luxury.
Basically:
China floods the market with cheaper but less QA'd parts, makes a gazillion dollars, is able to spend said money to fix yields / QA issues and streamline operations, by the time that happens Micron and maybe a few other existing players will have new memory production, and then we'll have a flood of cheap, reliable memory. 4yr, maybe?