Lovecraft is considered the father of eldritch horror. He also generously contributed to the community as it was growing in popularity. So there is little difference between the generic eldritch horror and referencing Lovecraft himself. I hold to my position that not all of Lovecraft/eldritch stories have a hopeless ending. Most do, but not all; and even the ones with a happy ending for the population in general some poor soul gave up his sanity (or even his life) in the process.