That's "cleary" not what the grandparent comment was alluding to nor did they once mention tech.

Regardless of the ever shifting goalposts of those who constantly make this patently false statement about US companies inability to do business on the mainland, let's just restrict it to tech then:

I already mentioned Microsoft, how about Apple? Intel? IBM, Dell, HP? They all make huge dollars in China as well as benefit from their supply chains to sell elsewhere.

I really can't understand why people mentally cling so hard to this notion that US companies can't sell their wares to the Chinese.

The US trade relationship with China is much larger than social media companies (Apple, Micron, Qualcomm and plenty of other tech companies have no problem in China - what we're talking about here are media companiesm not tech companies in general). By focusing only on media companies, people in this conversation are getting a very narrow and distorted view of the US-China trade relationship. The US does very well, business-wise, in China, contrary to what most Americans seem to believe.