If players don't even play titles other than AC, which according to these charts is more or less exactly what is happening (and is my fundamental point) then it's the players who are not giving other games enough chance. The statistic don't lie, unless your argument is that nothing but...
The iRacing application is also becoming fully featured with this release, with the addition of some long-awaited Stats and Results improvements: the Driver Leaderboard and Lap Charts & Lap Graphs. We are also rounding out the New Racer Onboarding experience by adding Sports Car as an option....
And bearing in mind that the latter is probably on its best shape ever (cannot say with certainty as I uninstalled it many moons ago and I'm not looking back), I cannot understand why it's so low on the charts. RF2 is not getting much developer attention, for obvious reasons. ...