Pietro Alessandro Gaspare Scarlatti (2 May 1660 – 22 October 1725) was an Italian Baroque composer, especially famous for his operas and chamber cantatas. He is considered the founder of the Neapolitan school of opera. He was the father of two other composers, Domenico Scarlatti and Pietro Filippo Scarlatti. Using only the above description and what you know about the world, "The Neapolitan school of opera was a failure" is definitely correct, incorrect, or inconclusive? 