They played it safe with the PS4, let's be realistic. Also, they finished the PS3's gen on a high note. And that momentum snowballed into the PS4's gen.
Since it worked, I think they will attempt to repeat the same strategy. They will probably play it safe again, and that will likely be successful again to a certain extent. But I think we're moving into a time and generation where disruptive innovation is needed. The industry cannot afford another generation of "sameing". Sony is gonna lose their thunder with the PS5. I think that's pretty much innevitable at this point. We will all see.