Name one ASUS laptop with zero cooling fans.
I didn't even think about that, fans are the bane of my existence
I believe the whole Vivobook Go line is fanless, actually.
But again, the point isn't to get into a shouting match over whose proxied anatomy is largest. It's to try to explain why the market as a whole doesn't move the way you think it should. And it's clearly not about fans.
The ASUS BR1204?
That's kind of a weird one because the PC market has notably regressed there over the past few years. Other than the Surface Pro 12 there've been no fanless PC laptops released since 2022-ish, when there used to be dozens.
On a technical basis, fanless PC laptops released now would be better than the ones in 2022 just on the basis of 2022 lineup having a moribund lineup of CPUs (Snapdragon SQ1, Amber Lake, etc.) You could release a lineup now that would be broadly competitive with the M1 at least, but it doesn't seem to be a market segment that PC OEMs are interested in.