As much as I love hip hop and electronica, and as difficult as it is to make excellent music in those genres, it really is very easy to make okay music. Have you ever used FL Studio (formerly known as FruityLoops)? I remember downloading it freshman year of high school and being able to make a catchy-but-derivative hip-hop beat in minutes. That's not enough to make a hit song, but I think luck is a bigger factor than effort for a lot of underground hits.
Today, it's still how a lot of hip-hop and electronica gets made: https://en.wikipedia.org/wiki/FL_Studio#Notable_users