Packard said:
It could be something as simple as supply chain issues. Maybe they cannot get enough of critical components from suppliers. If that were the case, I would imagine they would take care of their domestic market first, and then enlarge the sphere as components become available.
Or more like a normal non-rushed product release.
Now matter how you "trust" a product, unless something else is pushing you, you release in the market where you have the best service presence should anything pop up. This is just proper risk management every competent organisation does. Unless forced to forego it for market reasons like with IT and consumer electronics where "not working properly" is almost an expectation these days.
No testing will ever be able to account for the (ab)uses*) a tool gets subjected to in the real life. This is especially relevant when releasing a new class of a product. So releasing to a limited audience
- which is physically close to your service/engineering center - first makes all kinds of sense.
*) No design can ever be idiot-proof. If one makes such, mother Nature will develop a better idiot.