According to the Castlevania article, Sony actively contributed to the creation of the pack, so it's not Konami's fault entirely if Sony was the one funding them to create it in the first place. Don't blame Konami off the bat when Sony's the one keeping it exclusive.
Well Konami doesn't carry the Title of the "EA of the east" for nothing. That's the same company which holds Developers hostage as Gym Employees (nojoke), rather them letting them develop some games, left the triple A market in an age where those Games are as profitable as they never been before and stripped Kojima and his Staff from any form of Health Insurance, just to name a few exanples of their dumb (and shady) buisness decisions.
Japanese respect culture formed a buisness environment where Leading positions are given by age rather than knowledge. And those old men over at Konami don't have any idea of the Gaming Market.
$ony literally was the worst and most corrupt of the big three. People just seem to kinda ignore that because of their marketing as progressive and consumer friendly or their brand recognition, but that's the comoany that made the ps2 and 3 hard to develop for on purpose, to make it harder to port games over from ps2, to artificially create exclusive without paying for Development costs by themself.