Borders are arbitrary. People might as well say the best outcome would be a capitalist world government. So those separatist Chinese that insist on having their own flavor of Capitalism should really just think more of the prosperity of the people ( /s obviously).

In the end the prosperity of the people does indeed matter more, but arbitrary lines on a map only become an issue for that when people make them so. There is nothing inherently problematic in having decentralized means of administration under different flags as long as everyone cooperates.