> cheap addition when you already have to support iOS and iPadOS devices.

Presentation form factor and input modality is different on LRUD compared to touch, 10’ vs handheld.

There’s an opportunity cost: it is better to improve the user experience on the vast majority of TV devices (eg Samsung or Android TV or Fire tv) than it is to support a tiny market share device like Apple TV that you now also need to keep up to date.