Epic celebrates "the end of the Apple Tax" after court win in iOS payments case

Will Sony, Microsoft, Nintendo, Valve and another software store have to allow mini stores on their platforms? That's to say software with its own payment system, inside of a free app?

It'd be useless because you don't have a Dev kit at home to do this with. You can't just pay $100 and get access to the Nintendo SDK.

And I don't think any of the big players are interested in fracturing consoles. Consoles change every 6-8 years so it's a moot point.

This is factually incorrect.

https://developer.nintendo.com/faq

    Q: How much does it cost to develop on Nintendo platforms?

    A: Registering for the portal and downloading the tools is completely free.
       Also, if you plan to release a digital only title, you can use the IARC system to retrieve the age rating for no fee, which will allow you to publish in all the participating countries.
       All that is left is the cost of acquiring development hardware: you will find more information on this inside the portal.

Development hardware isn't cheap, but it's also not out-of-sight expensive either. There's a very good reason why you see so many indie games this past generation on Switch.