Bethesda games are uniformly buggy piles of crap that are only fixed after 100s of hours of modded in fixes. Bethesda is only saved as an entity because they embrace modding.

Valve is a very bad example, yes they consistently make above average games, however they don't make many and as a dev studio i'm sure valve is deep in the red, they don't make money on their games, they make money on steam.