Gate_15L,
They never took YOUR JOBS because there was no JOBS for you in the first place. (As far as I know, no Jetconnect crew has ever operated in Australian domestic. That would be YOUR JOB)
I agree what you're saying about management being the culprits etc, but don't forget who operated those flights across the Tasman pre-Jet Connect. Jet Connect didn't just start a new market, they took over mainline flying, and subsequently slowed down career progression for mainline pilots.
And what happened to the group of aircraft in the 738 Rego block VH-VZE to VZL? Oh that's right, they're now registered ZK-ZQA and onwards, sporting the Qantas livery with "Spirit of Australia" on the side (and even The Wallabies logo at one stage).