LOL look at the executive team at Efinix: https://www.efinixinc.com/company-executive-leadership.html
From: Altera/Cypress, Altera/Xilinx/Lattice, MicroSemi/Mitel, Altera/Micron, Altera, Marvell
One of the big investors is AMD/Xilinx
So your scorekeeping is flawed.
Efinix is in a good position now because they have no large customers soaking up all the parts that can be manufactured.
Appears they use TSMC as a fab based on their news feed.
And it looks like, based on jobs listings, Efinix does hardware design in Penang, Malaysia; and software in Toronto, Canada.
China is not mentioned except for a sales office in Hong Kong, and their use of TSMC as a fab in Taiwan.