Probably the latter, but only because it was a relatively anemic 12 months for game launches.
If you're anything like me, you've probably reached a point where you've bought everything you actually wanted in previous sales - so if there isn't a lot of new releases you'll skim the list and move on.
I've never been a PC gamer so getting the latest and greatest PC games hasn't really been my thing. The closest that I've come to that was getting XCOM 2 when it arrrived on GOG. I would have bought that with a big discount though.
I just looked at my order history and my first purchase (I would have gotten freebies before then) was 08/05/2015: The Witcher, for $9.95. Next up was The Witcher 2 for $2.99 on 15/05/2015. Both the enhanced version. My third purchase was System shock 2, for $1.49, on 26/05/2017. I'm wondering what on Earth is happening in May every time! Maybe I should be surprised that I've been on GOG for so long. I only started playing GWENT late last year. Anyway, I haven't played any of the dozens of games that I bought here or got for free, apart from GWENT. I keep saying here that I'm going to quit GWENT soon and play XCOM 2. Might do that once I Level up to 60, for the nth time, for a perk, which is an extra crown point or whatever. Got another 3 levels to go.
I bought the first two Bioshocks when they launched here. I've played all the games on console. Not sure I'd play them again on PC but maybe I could. On console I would have probably played them at 720p or 1080p. Be interesting, maybe, to try at 1440p or play the remastered versions. Anyway, the kind of games that I am holding out for is a return to a big discount for something like Bioshock Infinite, just to be sort of completist with my console collection. Again, might not play it, so I'd be looking to get it at a big discount off an already permanently reduced price, for that reason.
By the same logic, I could be tempted by Mass Effect games if they release here with a big discount. I was lucky to be able to complete the first one on console, as it was buggy as Hell for the final fight.