Are you talking about the fans? I agree that there is definitely a turnover of fans who would have left gaming altogether, or those who are much less into it than previously, but I'm talking even about younger generations and new fans, and trying to come up with why they don't have the same company loyalty and enthusiasm for the big companies like there was for Sega, Nintendo, Capcom back in the day.
There's nothing to unify younger fans under the Sega brand...the disparity. Most of those gamers experience of Sega will be through sonic and sonic alone.
