Ducati is has always been brand that pushes performance boundaries and it has always been more expensive than the competition, Harley whose main appeal is their history and Americanness also charges a premium. Just because Ducati is winning GP's and translating that to their Superbikes is not nest shitting, you can always buy a Monster or Supersport but it you want MotoGP for the street you are going to have to pay.
The bigger picture is the erosion of buying power among the middle classes, that this generation will not be as prosperous as their parents. Thats systemic and a much harder fix,