> Adding onto this, in China you also have to deal with the Great Firewall as well
Not you don't. For most of the Chinese entrepreneurs create startups inside China - their local market is big enough to not to have to worry about internationalization. The big three you named there, Tencent, Alibaba, Baidu, didn't worry about that at all for many years sine their establishments.
> In China, its anything owned by tencent, baidu, or alibaba.
There are certain truth to it, but there are exceptions too. I.E. Douyin/Tik Tok(social vlogging) and Pinduoduo (e-commerce) have been immensely popular and successful in recent years and weren't owned (or significantly owned) by the big three.