No they don't, they're not as rich as you're making them out to be, Sony cannot pay off so many devs to make their games exclusives to PS console platform,
Japanese devs choose to ignore xbox platform, simply because they don't have enough sales to warrant an xbox release. Market share is abysmal after 20+ years and on top of that most xbox gamers don't buy games, especially now when they expect GP release. To make matters worse, xbox has a higher minimum physical release print count than PS.
Even Capcom ignored last gen xbox consoles for RE4R.