I couldn't have one because I was on Mac at the time and we couldn't and still can't have horizons. In order to support frontier further I actually bought a windows PC and an expensive graphics card before buying horizons, by then it was too late for the cobra mk iv but I have brought loads of ship skins and vanity items from the frontier store since.
How about if FD poll the people who currently have access to the mk iv to see if they'd be willing to make it non exclusive.?
I think that would be the fair thing to do.
I'd vote no.
I am a Linux user. I purchased Windows and hardware specifically for this game. I'm sure a lot of players are in the same boat. Nobody cares.
If fdev makes a liar out of themselves by releasing it, I'd be very hesitant or directly opposed to any future 'exclusives' that they try selling in times of need.