I'm running into folk that are from those days you rackmounted PCs and ran web servers. This old method is fine for concept work but web hosts today use other than PCs to serve it up.
So the hardware, electrical costs and cooling have been greatly reduced as many sites are in their cloud server farm.
What this new hardware looks like is on the web. Here's one such article on Facebook's custom farm servers -> https://en.wikipedia.org/wiki/Open_Compute_Project
Some hosts such as iPage charge an extremely low fee for hosting services, which makes me wonder what their major profit source is?
Sorry if those terms weren't exactly technically correct LOL

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic