What makes you think that?
Euro companies will use euros internally, Australian companies, Australian.
Have a look at currency turnovers - hell, look at the gold price, it hasn't tanked, the USD has risen strongly. The USD is currently as strong as the Aussie was 3 years ago, so you get ostensibly falling commodity prices because they are falling PLUS they are domiciled in USD.
The world is far more complex than the average finance journalist can comprehend let alone explain in a 2 minute presentation to camera...
Scblack might occasionally get to shine the shoes of those that have a good understanding