When it costs more to catch a cab to the airport than it does for a flight it distorts the perception of the average punter.
The cost of airfares in WA would, I suggest, be reflective of the cost of production rather than be indicative of any attempt by either of the two major airlines to rip off the travelling public in WA.
You only need to look at the dismal performance of both carriers - one more dismal than the other - and you can easily see that they are not charging what they need to charge to cover their costs and make a proper return on invested capital.
I doubt though that this would be a prevailing review of any parliamentary inquiry who are just there to grand stand and beat their own chests.