Troll question here: How can you "invest heavily" in a console?
The PS4 was $399.99 on release. My CPU alone was more than that and my GPU was almost twice that. How the bloody hell can you invest HEAVILY in something that's sole argument is being CHEAP?!?
For Sony there's fee to include games to be put on the platform. There's fee's for the online service. And there's transaction fee's in games that offer ingame buying. It's a big business and the trend pretty much shifted from selling just one copy towards a complete digital platform.
Console's did only had one resolution to work with or on. So it's pretty easy to sqeeze out every bit the console has to offer. As for the Jaguar 8 core PS4 CPU: it requires devs to fully focus on spreading the amount of threads over different core's, otherwise it will work bad. Simular as with the PS3's CELL Cpu. Games that ran bad on the CELL CPU was pretty much due to only utilitizing one SPE and not all 7. The 8th was disabled to keep the yields up.
It's why you see an antic Bulldozer FX CPU still able to cope up with today's games. It's because the complete PS4 ecosystem with a slower 8 core jaguar is being applied to PC these days.