From Sony CEO Kazuo Hirai in a fiscal year conference call transcript by Seeking Alpha (via Polygon):
"All the 4.2 million PS4s that have already moved into the hands of consumers, more than half of the people that have now gotten their hands [on] the PS4 have actually signed up for PS Plus service, which bodes very well for us," said Hirai in a conference call to discuss the earnings for the third quarter of Sony's 2014 fiscal year, according to a transcript from Seeking Alpha.
This could be misleading. Polygon brings up a good point that nothing confirms whether these subscribers just signed up for the 30-day free trial or have spent money on a month, 3-month, or 1-year subscription.
The good thing for Sony is like similar free trials, the subscription won't just go away. If the subscriber doesn't cancel the free trial before the 30 day are up, it will roll over to a $17.99 3-month sub. More than likely, lots of these subs will roll over.
Still, this is a good sign for the service. The $50 per year rate nearly pays itself in a month (nearly doubles it worth this month alone in free games). Every PS owner should have the subscription, and a higher attachment rate will give subs even more benefits.
Image credit: Flickr