If companies don't want to be complicit in these crimes, they need to extricate themselves from the country and cut all ties.
If they do want to put profit ahead of everything else, then whatever, but you don't get to defend them as doing the right thing for their employees. They're enabling the whole situation.
[Edit to bring in a sister question] "Why don't Apple pull out of China then?" - because they put profit and cheap manufacturing ahead of their morals. And apparently we don't care enough that China effected a genocide while we watched.