I don't do consoles, so this doesn't mean anything for me personally. But it's a hopeful sign that maybe the game will be able to sell beyond just the community of people who've been waiting on it for years.
It's hard to imagine it will do well, though. How many people are going to take a chance on a direct, story-focused sequel to games they haven't played? In such a niche genre? On console? I just can't see this game having any sort of wide appeal--despite how eager I am to play it.
I don't know. I think you'd be surprised. Nostalgia is running pretty strong these days. And, I mean, I've definitely picked up games just because they looked cool and I saw them on Steam / the PSN. My boyfriend has, too. Even ones that are sequels. That's part of why they're making some sort of RecApp. Plus there will be some of us who end up with multiple copies of the game. At least a few people have already made their intentions to buy it a second time for the PS4 clear. Also, Sony does have some dedicated fans who love the indie titles they're bringing in and who will likely check the game out for that reason alone.
Though I would say this is all the more reason to wheedle all your friends into buying it. A handful of people I know are at least a little stoked fot this game just because of how excited I am about it, and so they plan on checking it out once it hits.
We're still sort of figuring out trends as far as how well games sell after being Kickstarted. This is all still pretty new. But I'm still going to say that the more available the game is to people, the better it is for RTG (and by extension, for us fans of their work).