Damage is done: NRL response to Sam Burgess' injuries too little, too late

"The damage done to Burgess’ brain by staying on in one of the most brutal games on record, and taking hit after hit after hit after hit – each full-on-tackle judged by experts to have the same impact as driving a car into a wall at 30 km/h – is now done."

With ongoing head injuries legitimately affecting the entire survival of the NFL in the United States - how long until the NRL and AFL are facing similar issues?