Ann: FY21 Full Year Results, page-32

UWL are the only competition and by all accounts their level of service is well above the rubbish NBN service. Plus they tie up contracts for the entirety of new developments.
In contrast to what you say, it's the lack of competition and demand for Uniti's infrastructure services that is the reason for such strongly forecast growth.
5 years and beyond (looks like 7 years at the moment) of backed up work, with every new contract added on to that queue.

if there was any competition they should feel free to jump in anytime