[otoburb]

>>There is no vendor lock in in mobile network infrastructure. Everything is standardized trough and trough. You can buy components from different suppliers and they work together.

There technically isn't, but 3GPP standardized interfaces leave enough room for there to be a smoother deployment and operational efficiencies gained from a single vendor deploying RAN and Core together. Few suppliers can do this -- Huawei is one of them.

>>Who are not Chinese nationals. Working for foreign company subsidiary does not change your national allegiance.

Maybe this is region specific, but I believe most (all?) initial Huawei deployments are performed by Chinese nationals working directly for Huawei. To your point, maintenance (i.e. post-deployment, live production) can be a mix of foreign company employees and Chinese nationals.