@Flohack I 1000% agree with you. UT should have only opensource app and/or be based only on open source services by default....
neither Android is based on proprietary services/app by default (excluding google services obviously).
About the proprietary services/app the thing that we really need is a way to find easily them (for example why many user don't know about LoquiIM? it is probably hard to find)
Imho by default we need only the very basic things also for convenience reasons: the OS with the DE-GUI, with the hardware exposition to the user space and the ability to integrate the apps with the system(ie I install an app "clock-x" and "mail-y" and I want them be able to put an applet on the toppanel), the phone calls, the sms app, and a way to install anything else.