I'm buying VOC because, page-456

"but why would they bother with Aus, their own market is huge compared to us"
I can give 2 reasons:
1- Value
2- Cable

Criss cross the world with cable and build out 5G which they are looking to dominate, they are the clear world leaders in 5G in regards to how aggressively they are betting on it.
They can borrow money for 30 years at rates 20-25% lower than VOC can borrow for 5 years, would give them great Cable assets to build out to Asia, whilst Aus and NZ are tiny they open up the Asia Pacific region, flog off data centers and build out partnerships with the big tech companies rather than try to provide the OTT services themselves.

Ps: I'm moving to hold now as I put fair value at $3.50-4.00