The corporate watchdog has warned that a future merger between any two of the remaining fixed broadband suppliers would raise serious concerns, while also giving the go-ahead for TPG Telecom’s $1.6 billion takeover of iiNet.

The corporate watchdog has warned that a future merger between any two of the remaining fixed broadband suppliers would raise serious concerns, while also giving the go-ahead for TPG Telecom’s $1.6 billion takeover of iiNet.