Gorky17 may not be the sole reason for a person choosing OS4 over MOS, but it could be a contributing factor.
No.
So you're saying it's impossible for Gorky 17 to have any effect whatsoever on a person's choice of platform? That's a shame for Gorky 17 if you're right, that in a market with so few games it still has absolutely no pulling power.
Also, certainly by the sounds of this thread, if Gorky 17 isn't ported then Hyperion and Eyetech may be making a few more sales than if Gorky 17 was ported to all platforms.
No, it sounds like Hyperion will be making less sales of Gorky 17.
I can't see your assertion in the thread. Hyperion may have lost one sale, but then again they may have gained an A1/OS4 buyer, it is impossible for us to judge iamaboringperson's want of this game.
And Hyperion will be making less sales than what? Than if they ported to MOS as well? That's true. But your sentence states that Hyperion will make less sales, it never asserts any difference between the way the situation is now and any hypothetical situations. So we have to assume that you're applying "less sales" to the current situation.
But for the current situation there is no given reason that Hyperion are going to have less sales when the only people buying the game will be OS4 and Mac users, and I cannot see either of those groups of consumers boycotting Gorky 17 purely because it's not also available for MOS. (This would be the point where somebody then starts up a thread boycotting Gorky 17 :-P)
(I'm sorry if I'm going over the top, I think I've jumped rather too hard at the chance to have such a discussion.)