I never meant to imply that once a company sell the hardware for profit, they forfeit the rights to profit off the platform. It's really about market power. The two dominant mobile leaders have enough market power to increase their take to 50%, for example, arguing that's how much traditional retailers take, if not for the risk of attracting government interventions.

The intention is to point out that simple arguments of 'Xbox is charging 30%, so it is fine that the mobile platforms do the same thing' failed to take into account of the nuances of the situation. Isn't it weird that these platforms are all charging 30% even through all these platforms have different business models, with different cost structure and provide different values? I hadn't even talked about how Microsoft has been getting no money off sales on Steam when it is their platform, because they hadn't (yet?) lock down the platform.

Finally, Nintendo did sell the Wii U at a loss. [0]

[0]: https://www.gamesindustry.biz/nintendo-still-selling-wii-u-a...