GCBD didn't nationalize Apple in PRC, it's data soverignty requirement same way TikTok was coerced/pressured to moved US data to Oracle US servers. Legal minutiae matterse less and less when outcomes consistently comparable. In terms of differing market environment, TikTok/Bytedance was one Trump EO away from being force sold to US companies (actual nationalization), which is more aggregious than PRC joint venture scheme that's at least upfront about requirements foreign companies operating in PRC. Apple didn't have to take GCBD deal, they wanted cloud business in PRC to keep selling iproducts. Meanwhile TikTok is bending backwards to follow US laws and still subject to various shenanigans according to changing admin whims. Functionally, it's not substantively different, US have alleged "better" laws, but also better lawfare to circumvent said laws.
IMO this is just reality of mediating "strategic" foreign companies operating domestically, especially from "adversarial" countries. Set legal compliance onerously high and hope they leave. Western platforms left PRC because they couldn't stomach the filtering requriements that every PRC company has to shoulder. And when they finally adopted improve moderation due to requirements/pressure in their host country, they tried to get back into the PRC market. Meanwhile TikTok is sticking around US because Douyin survived burdens of PRC regulatory environment so what's another difficult market. Both markets are difficult, TikTok just better at playing ball in such enviroments. FB/Google can't even control their own employees from sabotaging their return to PRC.