Hmm, yes/no. Yes, because the overall boon of the live action stuff as a general popular trend seems to be fading, but no because the boon of the live action stuff quit pushing its own merchandise back with DOTM.
With the masterpiece line, I think it's more of trying to see how many golden eggs they can get the goose to lay at once rather than trying to get as many as they can before the goose dies.
AT THE SAME TIME, I don't blame them, really. If they can keep raising the prices without significant sales losses, they have every justification to.