Margins and addressable userbase. For many people, their mobile device is their only device. And if they do own a laptop or desktop, they're likely to keep it

Margins and addressable userbase. For many people, their mobile device is their only device. And if they do own a laptop or desktop, they're likely to keep it longer than their mobile device since it's likely to be fast enough and subsequent version aren't likely to provide huge advancements that affect most users.