Sunken cost fallacy and Cubase - I can relate to that! Somehow they are really good at upselling even those users who are not really convinced about their product.
Cubasis 3 (the iPad version of Cubase) came out a year and a half ago and is still so horribly broken as to be unusable for a lot of users. At release it couldn't even have been considered pre-alpha. That was the point I finally gave up on them never to return.