I can't dispute that since you've not provided any examples to support your statement.
Adobe creative cloud 60$ per month
Autodesk Maya 235$ per month (or 156$ per month if you buy 3 years in advance)
Nuke VFX 236$ per month (their cheapest option btw)
ZBrush 43$ per month
It's a moot point anyway, either you like the price or you don't. Maybe Scirra changes something or maybe they don't. My guess is they don't plan to because they don't have to.