Not sure why people are beating up on @nxn for saying his opinion. Different people value different things.
I think I can answer your question though. Buying a console is a plug and play experience. Building a PC is not. Not everyone has the time, the patience, or the technical experience required to purchase compatible components, assemble the machine, and install the various software.
Anyone that’s ever bought a prepared meal has overpaid in comparison to acquiring the ingredients, prepping them, and cooking the dish. It’s worth the price to do so because I sure as hell don’t want to spend time making a bowl of French onion soup.