Using larger aircraft for SYD MEL

[Jethro H]

I hope this does not seem to be a dumb question but this was raised recently with the Government's attempt to look at High Speed Rail on the east coast.... again!

The discussion mentioned how SYD-MEL is one of the busiest air routes in the world with almost 800,000 PAX last month, but the question raised which has was not answered is why with about 2500 PAX per day don't airlines use larger aircraft for this route such as A380 or the 747.

(Mind you, I wish they stop wasting time on the HSR or VFT ideas as it will never happen)