So what do you propose? Have a level playing field by cutting down the tall poppies? That would be the path to an empty paddock. Certainly one that couldn't compete in Australia.
You infer that some people, presumably licensees, are treated differently or unfairly because the are not "big players". Where is your proof? Asking for you to provide some facts to justify your view is not opprobrium but asking you to be fair. You demand it but don't want to do it.
What is "too big"? Te Akau? Lance O'Sullivan? Robbie Patterson? Pitman? Kenny Rae? All different size stables but all could be called successful.
Recently I have had the experience of seeing inside a couple of big stables and talked to a number of successful trainers. I knew that they take things to a different level but even I was surprised to what level they go to to ensure success. The systems and science behind what they do is impressive and legal. It needs to be if you are going to get that extra 1 to 2% that makes your horse competitive at the elite level.
Your everyday battler could do the same or similar things but on average they don't try learn or improve. It's the same in any sport or business for that matter.
Bur if you have any facts to support your contention that the deck is loaded in favour of some over others then please do provide some evidence.