They’re not taken for granted, they are compensated by the corporations I’m purchasing the device from.
You’re taking for granted the requirements that need to be met in order for the device you’re purchasing to be technically and commercially viable. It needs to work, it needs to be safe, it needs to comply with privacy regulations and so on.
Again, these problems have already been solved on desktop for decades. They’re not breaking new ground here.
Managing complexity with containerization and sandboxing is occurring on desktops too. It’s more mainstream in the mobile ecosystem because of essential differences in the ways users interact with phones versus desktops.