Factory ammo would be an advantage for the majority of hunters who do not reload. Also, good luck finding a 6.5 WSM on the shelf at sportsmans. Don't get me wrong, I love the 6.5 SAUM and the 6.5-284 but the PRC definitely does have some advantages - Lapua Brass, ADG Brass, Hornady Brass. Many companies are starting to chamber for it as well, including Tikka which is going to be a huge hit. To call it a failure has to be a joke, it has tremendous support so far and in my opinion isn't going anywhere for quite a while. If you clarified your post to say "offers no velocity advantage" then you may have an arguing point, but to say there is absolutely no advantage doesn't make much sense.