Typically companies produce products that people want to buy. A vocal number of people on the internet keeps saying that everybody wants laptops with a bigger battery instead of thin laptops. Companies are producing thin laptops instead of big laptops with big batteries though, because that is what people are buying. So in reality, people do not want the bigger laptop with the big battery, they want the thin laptop.

If you want bigger laptops, go out and buy the biggest one you can find. If all these people that say they want it do that, you can be sure the market will be flooded with laptops with a big battery.