George MadDonald, William Morris and Lord Dunsany object to your rewrite of the history of Fantasy in literature. So do the 1950s authors of Sword and Sorcery novels.
Tolkien did NOT invent the Fantasy genre, although there certainly are a large number of folks who think they have to copy his works to be successful.
Now, if you were to say "Tokien's publisher ruined the Fantasy genre by breaking story into a long, drawn out series of novels" you'd be closer to the mark.