As the US's importance in global trade declines, Taiwan's trade will slant more and more toward China, and the 2 regions will become more and more interconnected until they are de-facto unified.

That is the endgame. It's also why China has quite generous policies toward Taiwan residents, such as easy-to-get Mainland Travel Permits for Taiwan Residents. It's all to promote trade interconnection.

2049 is only 25 years away...

Reunification is a process, it doesn't happen in a day. China approach is to economically couple Taiwan (it already is the main trading partner, still there is ton of room for growth), steady growing their trade until the % is large enough that even the taiwan compradores can't refuse the economic benefits of reunification.

It depends on how you define it, China has a long-term strategy, reunification could still take decades, even more so since Taiwan is an important US base