Do people actually buy new platforms just to play platform-exclusive games?
Yeah. I have a PC and prefer to play everything on that (obviously).
But the PS4 has a compelling lineup of exclusives. I bought one near launch, played the games I wanted, then resold it. Only lost maybe $80 in the process (including money spent on games).
A couple years went by, then I bought a PS4 again, after a stack of exclusives I was excited for built back up. Since then, I have zero regrets. I have for sure gotten my money's worth with only playing sony exlusives.
The sad fact is that sony is one of the only publishers bringing fucking kick ass story driven, single player games to market. PC has some awesome single player cRPGs, but as far as AAA story based games, titles exclusive to the sony platform are the best there is right now, generally speaking.
Story based single player games are my favorite and for now that means I kinda have to have a ps4.
If the lineup of exclusives gets stale again, my shit goes back on ebay and I bet I wind up spending less than $150 this time around including all the games.