Consoles used to be sold at a loss in the past, Sony was initially losing almost 350$ on each PS3, and there was nothing to buck it up, but that was almost 15 years ago, times have changed significantly since then, now we have PS Plus, DLCs, Season Passes, microtransactions etc., so a 100-150$ loss today is nothing, every single console sold will make up that loss within first quarter, easily. Just look at all Sony's financial reports, where and how much revenue comes from, they can sustain 399$ DE, they just needs to have balls to do it.