I think hyper optimizing could be good for growth, but it can very well cost too much. I often look at how Aliexpress accepts less popular payment methods and they ship anywhere. US and EU businesses straight up refuse to do one or the other (or both).

They just don't care about smaller buyers. It's their choice, so why not, I guess.

Hence, China will continue taking market share from the "developed economies" for the foreseeable future.