Standardization
Standards exist so that products from different vendors can interoperate with each other, for example, sending email from Gmail to Yahoo! mail, and use common interfaces, for example, sockets for electrical appliances. The standardization does not always have to come from imposed standards; sometimes, it comes from the user expectations. For example, the interface of a Calander/Scheduling application is pretty standardized. There is little scope to differentiate a new Calendar application from the existing products like Outlook Calendar, Google Calendar, and iCal while just implementing the standard is still pretty hard. ...