Sorry, that was poorly written out. Under GAAP the building itself would typically have to be amortized for decades. A lot of the physical plant would need a lot of explanation to justify a short amortization period too (although not 40 years!) given that plenty of decades old plants still churn out chips at large node size. And There is, as I mentioned, an asymmetry in accelerating vs deferring the expense in terms of sector-specific stock market perception.

But I was lazy in conflating the two cases so thanks for pointing that out.