Nah, this is the building a loyal base on another platform.
Eventually they all become one, doesn't matter if they on Playstation hardware or not.
And spill over is guaranteed once they're into the ecosystem.
Imagine Sony now has an audience that wouldn't normally show interest in their shows and stuff.
Now they're are and like what they are getting on PC from Playstation, but they can have more..
They show new stuff that excites them and now they're left with a choice.
Do they really want to play it or wait for an announcement that may never come.
Either way Sony Profits.
I mean sure you'll have your elites that will buy Playstation games on PC and turn this feature off and will never buy a console because they are the Master Race
But some will buy a Playstation just to play and they double dip if it ever gets released on PC.
that's what Sony wants, and when you're already in the ecosystem... it's sooo much easier to be tempted.
After all it worked for DVD & Blu-ray.