I think we misinterpreted each other.
In my original comment, I mentioned two separated cases. First, a “some ROMs”, referencing a more general landscape, and then the Genesis/MD collection from Sega specifically. And the “reasonably obtained” part is because some editions are very hard to come by, may be very expensive, and/or may be a nightmare to have the ROMs extracted from.
Then, with your reply, I thought you were asking about the former, when, going by my following reply, it would seem you were asking about the latter and that you thought I was talking about the latter too.
Would that be the case?
From one side, it does seem like they’re selling something old as new, but from the other, it seems they’re retooling the adaptation process. And as people seem to slowly but surely pressure companies into going back to making quality products, perhaps it’s GOG’s way of saying they’re in this bandwagon of quality shift too.