If they only took 5%, the games would be the same price. If Sony loses expect them to raise the price of the PS5 there to above cost.
It makes no sense why everyone, not developers, complains about Apple inflating the cost to users. If anything Apple’s App Store is deflating the cost of apps. Hundreds of thousands apps at $0.99(usd) and before the app store would have cost $10 to $30 or more before that on the available platforms. I have only seen in the last couple/few years apps start selling at a closer price that are expected on other platforms, but that is hard when consumers are expecting $0.99. I think there are a couple of RE games selling at similar prices to their pc/console equivalent. It is a real problem for Apple getting more games on their platform.