You buy an Xbox or a playstation, and it's a game playing machine. It just plays video games.
You buy a mobile phone. And it's a general computing device.
It's very much arguable that it's necessary for modern life.
So when you spool this argument out, it becomes: Google/Apple don't hobble their devices as much as Sony/Microsoft/Nintendo do, therefore Google/Apple should have to open them up more and Sony/Microsoft/Nintendo should not.
A mobile phone is a camera, gps, web browser, telephone, messaging, food delivery, music listening, video watching, taxi calling, banking tool etc etc etc device.
living your life, Apple and Google get 30% of your transactions.
I'm sure you know that you can do most if not all of those also from a game console. Sure, it doesn't always have a camera or GPS but that's true for many other general purpose computers as well. You can absolutely listen to music or watch videos or do online banking from an XBox or Playstation.
Apple, however, definitely advertises the hell out of the App Store, which is open to anyone.
Consoles also sell the hardware at a loss, and use game sales to subsidize it. There's different expectations, advertisements, and economics in play here.
Not even arguable. You need a smartphone running iOS or Android + a cellular plan to maintain an acceptable standard of life in America or most other countries today, and the costs of switching from one to the other in the middle of the cycle are prohibitive for most.
You can make a good argument for the internet being needed but you would be able to live a fantastic life with 'just' a laptop and a non-smart phone.