You'll notice mid to high end Motorola phones do not have the headphone jack, that's because they know those segments are more likely to afford being able to pay for their Moto wireless headphones, while mid to low end phones still have it. In North America, where your choices are primarily Apple, Google, Samsung, and Motorola, they are able to capture that part of the market, people who are too poor or unwilling to pay for wireless earbuds, or are unwilling to forfeit the feature to for better specs elsewhere