The problem at the moment is that most of the gear they are buying (Optus and Telstra) come from the same suppliers. Since Huawei was blocked from supplying (for good and bad reasons) the actual competition on the hardware is almost nil. Likewise only a couple of companies worldwide supply DAS gear which is required for the
The one place the Chinese companies are allowed to bid are the train telco networks as only they make gear that can deal with the fast moving platforms, for now anyway.