Why Is It So Hard For New Musical Instruments To Catch On These Days?

“It’s hard to overstate the importance of new musical instruments in history. The piano’s dynamic range allowed for a subtlety in composition previously unimagined. The modern drum set paved the way for jazz. Rock and roll would not have happened without the electric guitar. … So what happened? Why has there been such a drought of [successful] new instruments – especially in rock and pop, which thrive on novelty?”