> more efficient, cost effective, and reliable than anything prebuilt due to their nature

Absolutely untrue, and I’ve run the numbers to prove it. Prebuilt PCs have lower TCO because they extensively test configurations and have aggressive pricing around support contracts. Every broken pc costs them! Some vendors are better than others, as well.

Now, if we’re talking about gaming PCs, the numbers are a little different there. It makes sense to roll your own for that. But for most people, building their own pc yields nothing but the entertainment of building their own pc.