This is quite common. In the 1980s, a few Southeast Asian countries like Malaysia had hoped to receive some technology transfer by giving massive tax breaks to multinational semiconductor companies (Intel, AMD, Hitachi etc.), but mostly they ended up doing the finishing packaging, assembly and testing work for foreign corporations to sell to their export markets. The core technologies are usually kept protected.
China can of course choose to democratize the technology by sharing them with the developing countries, but that would end up killing their own private companies that needs to survive on the market economy.
This is like when you send a generic letter to all the recipients with the Find and Replace function.
lmao. this timeline is not real!