I went through pretty much the situation he describes: had developed videogames since I was 15, but while at university I joined the bank entity of a huge corp. I knew I wanted to do games, graphics and related stuff for the rest of my life, so after 9 months I had cold feet, got the show, accepted the offer and stayed three more years.

One of the best decisions of my life.

I learned tons of stuff that I wouldn't have learned going straight back into games. Not about COBOL or accounting, but about leadership, management and understanding the balance between business and technical needs.