Because im a gamer and a potential customer?
Are you saying Sony don't want Ps4 owners to update to PS4 pro?
I'm saying they don't care if you do it day 1 or day 100. Your OP in this thread was that Sony haven't done anything to market it to you, to make you want the console day 1.
Has it ever occurred to you they don't need to? First of all, long term money for Sony is in their exclusive library, which as an existing PS4 owner you're already buying. You can continue to buy those exclusives, and remain partially in Sony's ecosystem.
If the Pro doesn't appeal at launch, there's a whole Xmas line-up of games you can get impressions from. Come February, Horizon Zero Dawn launches, a game which I did or the will be a poster child for Pro in the new year.
There's all those opportunities for them to sell you the hardware. They don't need to do it now - you're an existing customer who isn't about to stop buying PS exclusives and who may we'll be inclined toward not wanting to be holding 'second class' hardware to play said exclusives on.