(Bloomberg Businessweek) -- Last year, Montero Lamar Hill was living at his sister’s house after dropping out of the University of West Georgia. He was 19. His dad was paying his phone bill. His plan was to become internet famous. Under the nom de plume Lil Nas X, he recorded a twangy melody over a trap-style hip-hop beat and laid down some rap boasts drenched in country imagery. He put the track on SoundCloud, recorded a video for t...