Xbox One S will be a distant third to an equally cheap PS4 and likely NX as far as budget options go come next year. Going premium-price with Scorpio will be a mistake in that case. Especially considering you can probably pick up a PS4K with either Spider-man or God of War bundled at $399 next fall.
The Xbox 1 S will have a $299 version this fall. Which ps4 will be equally cheap?
Having options in price ranges the competition ISN'T operating in is probably their best way to operate at this point.
They Scorpio figures to be much more powerful than the PS4 Neo. With it, They are targeting gamers who value that power. Pricing it to lose money, would be a failure to capitalize on that market.