Have profits gone down?

No, but they're also monetizing a bunch of extra ways that they weren't in the past. In the PS2 era, Sony made money from the cut of physical games and accessories and maybe the console itself if it was purchased far enough into the console lifespan. These days they have online subs, cuts of DLC and microtransactions plus all the other stuff they had previously. And they get bigger cuts for DLC, microtransactions and digital games since they are the (only) retailer.