I'd be very surprised if lots of people didn't have it , due to sales etc.
I have sort of gone off IK for a few reasons
1) updates.. not everyone wants to live in 32 bit land
2) their charging scheme for re-downloading / license transfers (most others don't charge that I deal with.. if I buy off esoundz instead.. ZERO fee for re-downloading)
3) their continual promotion of i-apps.. that I have "no" (polite version) interest in.
4) quick to devalue their plugins with sales etc.