I am skeptical of your premise. I know of zero humans who terminally value “diamonds” as defined by their chemical constitution.
Indeed, diamonds are widely considered to be a fake scarce good, elevated to their current position by deceptive marketing and monopolistic practices. So this seems more like a case study of how humans’ desires to own scarce symbols of wealth have been manipulated to lead to an outcome that is misaligned with the original objective.
Considering that DIY is widely acknowledged to be viable, my prior is that the marketing around Alienware is bullshit and it’s just fine. Care to point to hard data that refutes this?