Although many companies accept increasingly buggy programs that spin off add-ons at additional cost, they feel trapped in a pile of legacy files. Often, CAD software that would save the company hundreds of hours every month is not even considered because of the previous investment in what once was "state of the art".
Sometimes, though, a company witll abandon a great program to switch to a more popular but far more bug-ridden (primarily becauser of its needless complexity) one. In this scenario, a fierce and relentless marketing stragedy (and a reluctance to supply demos) keeps the unwary customers rolling in, despite the greater cost and longer learning curves. Some of learn the hard way - bigger is not always better - always try before you buy!