Gravedigger I feel your pain.
I think the reality of it is these bands should have given a proper push from record labels and radio over ten years ago in the mid to late 90s when heavy metal was still struggling, and even more so in the States because Power Metal does have its success in other parts of the world and has for some time. Unfortunately, when it comes to the trend jumping American listener at this point this ship has already sailed.
If at some time in 95-2000, someone like Ed Trunk who reaches thousands of listeners on a major market hard rock/metal radio show, really was on the pulse of the music and gave bands like Stratovarius, Edguy, Hammerfall, Blind Guardian, and Gamma Ray a chance, yes, I think these bands would have a bigger audience here. In the 90s this sound was something new, fresh to American ears after hearing gunge, yet grounded in the classics like Iron Maiden, Judas Priest, and Helloween. Its just unacceptable that American hard rock radio were not playing all these bands years ago. I can prove it, case in point with Iced Earth. They are the only band from the genre Ed plays rather often and do draw the largest crowds in the NY/NJ area. Ed does make some kind of a difference on the scene.
Do I think Strato, Edguy, Hammerfall, Primal Fear, Blind Guardian, Gamma Ray, Kamelot, Angra, and Nightwish should be looked at as the next generation of metal masters that should be playing American arenas? Absolutely! Problem is like I said its just to late in the game. All these bands have been around for 10 to 15 years. They are no longer seen as something new and fresh.
At this point I'm just happy we still have a festival (and the fans) like ProgPower to give these great bands a place to play and start their U.S. tours. The big names in Power Metal at least have earned some level of respect regarless of it not being from the "popular" opinion.