I was thinking more along the lines of it being a really odd alternative given the Telstra TV is a fairly low cost item and Sky Glass is likely to be exxy.
If Telstra has no intention of kicking other (existing) users off the platform, I’m not sure whether it will be a big issue. I wouldn’t be surprised if Telstra is only interested in the hardware component and not necessarily the content.
Also, if this garners some commitment to get at least Kayo/Binge/Flash on the service, then that will be a significant win