Actually what Samsung is doing is the smart way to do it. The average consumer doesn't care about operating system, only if it's cool or not.

Samsung currently have 2 or 3 phones that can be considered top of the pile (Galaxy, Nexus and Note), they will sell millions of these phones on reputation now.

Android works just about, it bridges the gap. They start rolling out Tizen to their new major devices and phase out Android without any fuss. People buy it, start using it in their millions and so a new ecosystem is born.

Nokia in their great wisdom did the opposite.