These operating systems never focused on applications and developers, and due to infighting among manufacturers as well as the complexity of developing on their low-memory hardware, they never developed a thriving ecosystem like Apple's App Store or Android's Google Play.[1][282] iPhone OS (renamed iOS in 2010) was designed with capabilities such as multitasking and graphics to meet future consumer demands.[280] Many services were provided by mobile carriers, who often extensively customized devices. Meanwhile, Apple's decision to base its OS on OS X had the unexpected benefit of allowing OS X developers to rapidly expand into iOS development.[283] Rival manufacturers have been forced to spend more on software and development costs to catch up to the iPhone. The iPhone's success has led to a decline in sales of high-end fashion phones and business-oriented smartphones such as Vertu and BlackBerry, as well as Nokia.[281][284] Nokia realised the limitations of its operating system Symbian and attempted to develop a more advanced system, Maemo, without success.