The problem with this argument is that while digital sales are 7x more, it doesn't break down the digital portion into purely games, online-DLC, or online-exclusive content.

I buy most of my games physically, but then all the DLC I buy from the PS Store because retailers don't have it. And I also buy digital games too, because the games literally don't have a disc, if it did, I would buy it physically.

I would say that my ratio of digital purchases to physical ones (by dollar amount) is 7:1. I would buy 90% of my content physically if I could, but I can't. And now with the upcoming changes, I'm going to end up buying 0% physically and 0% digitally.