First, more evidences of these camps are needed. Unfortunatelly it's very hard to have concrete evidences from what happens behind the curtains in China, as it's a very closed country where the government watches everything going on very closely.
What do you think is going on with the people in the video? There are not many things that could be happening to the people handcuffed, blindfolded and shaven in the video that are not serious human rights violations. In fact, I cannot think of anything that could be happening not involving serious human rights violations.
No one is going to pull out of China because of this. No company (or country, politician, etc) really even cares that its happening. They only pretend to care when the news shines a light on it and people start sharing these horrible videos, which is why politicians know that they have to make a statement about how they're sanctioning some random Chinese officials.
Many companies are already pulling out of China due to the fallout over the Coronavirus, and those that are can add this to the list as to why they are leaving. The NBA is
ending its relationship with a training camp in Western China, where all this is happening.
I can see other companies relocate their supply chains out of China over this + the coronavirus. If there is more evidence of forced/slave labor being used to produce other products made in China, I can see more companies pulling out of China.
Trump has been a China hawk since long before he became a politician. As mentioned above, the US cannot simply end its trading relationship with China because we rely on Chines products for much of what we consume, including basic medicine. Most of the China hawks in the Republican party were elected as China hawks, and I don't think they are hawkish to gain a political advantage.