But the backlash wouldn't just be from aussies, it would be everyone who paid for the game on PC. Steam would get slaughtered with complaints and requests for refunds.
It's mostly that the executives buy the crap spurted by the DRM company salesmen - who walk into the meeting, drop statistics about how they've lost eleventy billion dollars because every pirate copy is 2.3 lost sales (average household size x downloads). DRM product XYZ costs only $1mil and will get you back 90% of those downloads!*
*this is complete bullshit but it sounds good to executives.
Pen < Brush > Sword