I personally take exception to the above post.
First-unfortunately, success is actually measured by length of run and profit. I'm an artist so I'm sensitive to that aspect of all the arts, but I've seen exceptional theater pieces which had short runs and were considered flops.
Second-I absolutely loved ROA. I also absolutely loved Pillowman, The Sorrow and the Pity (film), Angels in America, and countless other higher brow works of art. I assume you're not only targeting me with your following statement-"It's just another sad of case "I knew all the songs and know nothing about theatre, so I loved it". aka Mamma Mia, Baby It's You...etc " but I think you're out of line in generalizing the type of person who enjoys ROA.
<-----I'M TOTES ROLLING MY EYES