The reason why Nvidia is buying now does not have to do anything with Arc or GPU competition. There are mainly two reasons. 1) This year, Intel, TSMC, and Samsung announced their latest factories' yields. Intel was the earliest, with 18A, while Samsung was the most recent. TSMC yieled above 60%, Intel below 60%, and Samsung around 50% (but Samsung's tech is basically a generation ahead and technically more precise),…
This definitely isn't a thing that every company does (or even close to every company).