I think the point he is trying to make, from a content point of view if only PSVR does well no one will invest lots of money making games for that alone. If PC VR is successful, then there are more avenues for revenue and that helps Sony because 3rd parties will make content and port it to multiple products. This is basically why Vita died, because they couldn't or wouldn't invest that money in the product alone, it needs products that can be ported to it to provide long term quality items.