thats an opinion....but heres mine, maybe nokia just know they're target market, maybe they know that most people between the ages of 45 and beyond doesn't want to adapt to a new "OS" on their phone (or pc ) every two years, maybe they just want something that looks like what they knew, but with added features as to validate the feeling of an "upgrade"? surely vodacom you must know that the greatest reason nokia has maintained they're market share is due to same reason MS has they're following..cause its what people know.
Sure S60v3/5 is not the glossiest OS, but its still up there with the big boys when it comes down to functionality.