Why doesn't Sony promote trade ins for the Pro?

[monocle_layton]

JRPGfan said:

People will decide for themselves soon if they want a PS4pro or a Xbox Scorpio.

They will be standing in stores looking at two box's:
PS4 Pro 299$-349$.  (normal PS4slim 199$ at that point)
Xbox Scorpio 449$-499$  (normal XB1slim 199$ at that point)

4k checkerboarding via the PS4pro, or pay extra and get it natively.
I think the price differnce will be enough to sway people to go for a PS4pro instead.

Either that or their happy with 1080p and go for a normal version because of price.

A $199 PS4 or $299 Pro would definitely appeal to me much more than a super beefy Xbox One.