Corporate espionage and military intelligence are not clearly separated in China, and this is due to the culture and values of the Chinese Communist Party. This is seen as the same thing, advancing towards the same goal.

This is arguable less of the case in other countries, which is why people in other countries don't understand what is going on right now (i.e. why Huawei is seen as a security threat). The concern is, if you in the future cross the will of the Chinese Communist Party, your national infrastructure may suddenly...behave differently.