I dont see why the exclusivity is still in place for the Cobra MkIV, the original justification for it was to drive players to Horizons. It was also four years ago (an absolute age in gaming terms).
Since that point, Frontier have changed and evolved so many aspects of the user experience that this artificial constraint appears as a dinosaur from a time long past.
As a PS4 commander, I was never given the chance to own a Cobra MkIV so the argument of 'you didn't buy it when you had the opportunity' doesnt work.
I personally think that Frontier should bite the bullet and simplify their offering, making the Cobra MkIV available to all.
If it needs to be behind some form of artificial attainment level (King or Triple Elite for example) at least that means that it is possible for the PS4 community to be able to gain access to all the ships that the PC and XBox community can. I would like the Cobra MKIV to be available to all platforms but the PC, XBox fight is for other people to have.