One possible explanation is apps.
Developers made $10 billion in revenue from Apple’s App Store in 2014, a record.
Developers take 70 percent of sales revenue and Apple take 30 percent. This means that Apple made over $4 billion from the App Store, and total sales were over $14 billion. That is a 50 percent increase.
Trends continue… In the first week of 2015 customers spent almost half a billion on apps, another sales record. January 1st was the biggest sales day ever.
Overall, developers have earned over $25 billion from the App Store.
Nina Ulloa covers breaking news, tech, and more. Follow her on Twitter: @nine_u