If we want to achieve adoption by the "main stream" consumer market we have to make sure that the Linux distro is absolutely idiot-proof. In the mind of many people, Linux is for IT-nerds and it's difficult to change a way of thinking. You'll have to prove it with: 1. Reliability (f.e. support of the EU); 2. Influencers who say that Linux is OK; 3. A Linux distro that is effectively proving that it can work idiot proof. Otherwise Linux is dead on arrival to become mainstream.