But either way I don't understand your argument.
If you're picking 100 people, they won't share any trait. But how is that relevant to this video clip?
If you're picking a random living room where people are playing steam games, there's a reasonable chance it looks like the video clip. Why not? The odds are low you get someone looking exactly like that, but you can say that same sentence no matter who gets picked. Don't fall victim to the lottery paradox.
except it very well might look quite like that. I happen to know such a case and I don't know that many people IRL.
Video Gaming became widely available roughly in the 90th in many of the places the steam machine is expected to mainly sell to (US/EU/CA/AU/UK/some other places, a lot of special cases). And most people who grew up with video games don't stop gaming. This means that Steam customers and gaming in general is not _at all_ anymore a hobby where most people fall under a small handful of stereotypes.
In turn statements along the line of yours are really quite meaningless and misleading. Steam has stopped being "just for nerds" or anything like that a long time ago.
And sure, things are probably different if you limit yourself to people active on steam forums, that place has a very different bias and using it as basis can lead to huge misconceptions about how people who "use" steam generally live.
Lastly let's also take a moment to consider who this steam machine is advertised to:
- no children, doing so is a regulatory pain
- not young adults, in current times 1k is just too much for someone currently trying to see if they can move out of their parent's place
- so more adults with a stable job/income, which grew up with gaming or at least do game a lot (so mainly age group ~20-35)
- also excluding the kind of people which would anyway go for a 3+k gaming system even if prices where more normal (like a lot of tech enthusiasts with money, "pc masterace" gamers, etc.)
and if you consider that potential customer base the chance for a randomly sampled home (of the target customer audience) to look somewhat like that(1) just went up quite a bit.
And exactly this is also the group for which the clip is, because a major part of the clips "message" is something on the line of a vague combination of "It's a product for everyone"/"Not just for nerds"/"Not just for tech enthusiasts"/"No special tech knowledge needed to play". I.e. "hey person who might live in an apartment without any nerdy stuff, it's also for you, you don't need special tech skills or anything like that". And this is kinda the only group where such a clip might make a difference in weather or not they buy, most other customer groups either won't buy anyway or will make a decision based on spec and reviews...
So IMHO this is a very well chosen clip setting.
Funnily the room does contain a lot of the kind of "not perfectly fitting furniture" you find a lot IRL due to a combination of people not finding fits and replacing/adding furniture over time with slightly changes in taste. I wonder if that was intentional or if the studio provider just didn't care or hat issues finding the right sets of things them self.
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(1): As in: It has no "nerdy" things, or tech enthusiasts things. And is "just" a "normal/boring" adult apartment taken a clip of shortly after it was cleaned.