Nintendo is unique in that they actually make some small amount of money on their devices. Does that mean they should be required to allow alternative stores on the Switch?
Apple make a lot of money on their devices, but they still did all the work developing the product, maintaining the OS, supporting the ongoing costs of device services like iMessage and location services that they don't charge for. The App Store arguably provides recurring revenue to offset those costs, which alternate stores would not help support.
Is it really fair to require manufacturers to allow third party app stores to free ride on all the work they've done?Maybe there is an argument that if a manufacturer makes enough money on the device they should allow third party app stores, but how much is it? At what point does it become ok to bar the device manufacturer from maintaining an exclusive app store?