Discoverability is a huge problem on Steam because there's so many games releasing, you can't really keep up.
18,000 games is almost 50 per day on average. That's 50 titles fighting for your attention and wallet every single day.
If you don't get noticed because you didn't spend half of your development budget on marketing, or your game didn't pick up well with influencers or more traditional media like reviews, you're just kinda fucked. No matter how good your game might be.
Speaking about quality, how many of those 18k titles were uninspiring, asset flipping slop?
I've always dreamed of a world where game demos were mandated by law. Some products can't be tested out easily, but just about any video game really can.
I have picked up the same habit. I'll download and test a couple of dozen demos every next fest, and then wishlist/buy the ones that are good. I played 108 demos this year, and some of my favorite games this year were demos like this: Kill Knight, Last Plague Blight, Karate Survivor, Empty Shell...