While there were many things that led to the breakup of The Beatles, many of which fans will probably never know about, the power imbalance regarding songwriting was an important factor. When the band first started, John Lennon and Paul McCartney were the only ones writing songs, but by the mid-'60s, George Harrison was catching up to them. By the time the band broke up, he had so many songs written that he ended up putting out a triple record. Many of the songs that are now considered his best work were written during his time in The Beatles, but his bandmates weren't interested. But Harrison knew his songs had potential, and in time, he was proven right.