I'd also love to play Portal, actually. They say it makes you sick, but to my knowledge I'm immune from VR motion sickness, so worth a try...
The real truth is they moved out of the game development space and embraced the game platform space letting their old products wither and die.
Alyx just hasn’t been quite enough motivation for me to take on the project of figuring out how to get it hooked up and working, though I did at one point do the few minutes of googling to confirm it might work (I think it’s one of those Facebook ones, and as I recall it is supposed to work for Alyx but I’ll need some cable or other). Especially since it’s a fairly short side-story, it’s just not enough juice to be worth the squeeze.
The conclusion of the series (until it’s not the conclusion any more—yeah, I know how franchises work, lol) though? That’d do it.
If I already had it out and used it regularly I’m sure I’d have played Alyx by now, but with that being the only thing I have any interest in doing with it, just not enough to get me to set the thing up for that alone.