The game seems to focus on getting the most money, not the most functionality.
Apple started the finger paradigm with the iPhone. It was intended for computer challenged people. That was followed by a similar tablet and the Android OS also using the same focus. Samsung recently came out with a pitiful attempt at windowing on Android. Retrofitting iOS and Android with the keyboard-and-mouse paradigm will be a major overhaul. However, there are three native OS's (not browser OS's) that start with keyboard-and-mouse: Jolla/Meego, a derivative of Maemo, Windows 8, and the forthcoming Ubuntu multiplatform in 2014. These will have the finger paradigm added on and will have more utility because of keyboard-and_mouse.
Meego (which apparently had problems solved by Mer which Jolla is based on) was very open sourced. It used Python, one of the easiest languages and widely used in projects that many end users can modify. It also has massive libraries because of its ease of use. Whether Microsoft or Ubuntu has a similar open source environment is uncertain (they both have strong support for Python).
Software patents have confined innovation but may be coming under attack. Donald Knuth was against them. Open source apparently bypasses IP restrictions. Open source may fit into China's philosophy since it and other Eastern countries have a history of ignoring IP. The question is how to make money on open source.
The open source, keyboard-and-mouse finger systems may end up being the most heavily used in serious applications, which could also demand higher prices.