It's a few things 1. Timelines. In the future these devices will just be screens. Transparent and flexible. So this is the timeline that leads to that future.

It's a few things 1. Timelines. In the future these devices will just be screens. Transparent and flexible. So this is the timeline that leads to that future. 2. Economics. You can ship more devices because they're lighter so the revenue per pound is higher. 3. Sexual selection. The many arbitrary extremes that exist in nature in males function as points of difference with no function but the attraction of mates. Consumer 'mating' with a device functions the same way as sexual selection. Every purchase makes that phenotype more likely to occur in the next generation. Thinner has caught consumers eyes as an effective selective feature. 4. Mastery. People feel satisfied by achieving mastery. Finding ways to squeeze more stuff into less stuff is one way people feel like they're mastering stuff.