I dont think they sold out, I just wanted to give the anti DT camp some more tools...
lord knows they need all they can summon
But comparing I&W to When Dream & Day..... there was nothing commerically compliant on Dream & Day. They still retained their signature but became more diverse, better grounded from I&W on, which would mean they had more sounds that would appeal to a broader audience. I highly doubt they did that intentionally, they just expanded their artistic presentation.
In Symphony X's case they havent really had anything commercially compliant to reach the broader audience, I doubt they do that intentionally either.... prolly just.... their artistic presentation