Problem is...you (the chip-maker) pay licenses to the satellite-owners, if your chip does not work outside china, no money. The Chinese 'GPS' is probably just for military or for the independence from other systems.
Yes, but hardware vendors need to decide if they put the chip in all devices and reduce manufacturing/design/testing costs, or put the chip on a Geo specific model and incur higher mfg/design/testing costs.
It's always a tradeoff and the cost of the chip in itself is not the sole decision driver.
It's always a tradeoff and the cost of the chip in itself is not the sole decision driver.