They also mention how the other closest platform is Switch. Which can also have something similar happen how ever it doesn't happen nearly as often. I'm guessing that Valve should be happy that Nintendo is incompetent at times. The eShop is still a mess, but you do get some hits at times like that melon game. And you still have other games like in Japan with that one Konami Train game ended up selling millions.Steam is the only major platform where breakout hits consistently happen. That's not to say you can't have a successful game on consoles or GOG/EGS, but it's less likely. Meanwhile you'll read about a random indie game selling hundreds of thousands to millions of copies on Steam almost every week.
So I'm curious as to what Nintendo does for Switch 2.
Also what they mention is true and goes back to the whole idea of what I think Valve was saying that it's not Sony,MS, Nintendo or even Epic that are their competition but rather how their competition was the likes of YouTube, Netflix, etc. And this seems to mainly go back to the idea that Steam is a living thing that grows and in order to function it needs engagement, so the more time you spend on Steam the more it grows. But if people stopped using or even visiting Steam that would cause issues.
While the console manufacturers do have some stuff that is tied to engagement I don't think it's to the same extent as Steam. On PSN the only thing that seems to change is their "top" games in a region list but that's about it. I don't think they even have a feature that recommends games to you and mentions as to why they are recommending them. They do have a friends and games friends are playing feature, I believe. Also as far as player engagement they do have PS Stars but that seems to be more of a rewards thing. But once again it goes back to that whole artificial thing where Sony picks the winners, since it's preselected games that Sony chooses that are part of those events. MS also has a reward thing, I never took a big part in it, but it's there and you get points to be used for gift cards.
Nintendo does have those platinum coins but that is mainly for Nintendo related games while it does get you physical rewards you still have to pay to get them shipped to you.