They bought the ram they needed when they needed it, and probably some extra too. Buying more than necessary is inherently a speculative action - you are betting on needing it in the future, and you are betting that it will be more expensive in the future. If it maintains its price it doesn't matter if you buy it now or later, if it gets cheaper or gets superseded by better alternatives then buying early is essentially a loss.

So in my view, this situation is almost exactly analogous to stock market speculation.

That's why I'm all in on hammers. Garage full of them.

Hindsight remains 20/20, though.