Well if Disneyland Magic Man had any validity prior, it's now completely lost. What a hypocrite!
Broadway is, and forever will be, a SERIES OF THEATERS COMMITTED TO COMMERCIAL, BUSINESS-MINDED ENTERTAINMENT. The fact that there are shows like NEXT TO NORMAL having commercial success is nice, but very difficult to pull off. Fact is, ANY show, whether it has artistic merit or not, is a GAMBLE. MAMMA MIA! has a worse book than SPIDER-MAN, in my opinion, but I don't see you complaining about its book? At least SPIDER-MAN has one-up on MAMMA MIA!: it has an original score!
"The Spectacle has, indeed, an emotional attraction of its own, but, of all the parts, it is the least artistic, and connected least with the art of poetry. For the power of Tragedy, we may be sure, is felt even apart from representation and actors. Besides, the production of spectacular effects depends more on the art of the stage machinist than on that of the poet."
--Aristotle