Swervy
International Captain
its more to do with structures within the game. Its very doubtful that Australia will go the way of WI because the game is so popular and no-one would let it...and even so, it would be extremely unlikely that even if Australian cricket did slump so badly that Irish cricket could really jump up so much as to over take themif WI can go from dominating to being one of the worst teams in about 20 years than that could happen too.
In WIs there are allsorts of reasons why there has been a slump.