I use many different programs and sure you can not compare Poser with them. but I do not think that it is a comfort bubble for the users to stay or use Poser and or Daz studio. Allot have huge collections of models, big investments, Years of work assembling a useful library .... Fully addicted on collecting these assets --->> they might not even use ! It is like a Drug . If one like you say jump out of there comfort bubble , how long would it take the one to rebuild the collection made the past decades ?? 1 day 1 week 1 month 1 year or a whole Decade ??

So for sure it is not because one would not be capable using another program either it is a Comfort bubble. It is how much time and efforts one Invested in the Passion he is having . Changing jumping to something else is the easy choice, we already are living in a evolution that runs way to fast what you have today will already be an antique tomorrow , no time left for creativity. How many Programs will be Improved this year ? You barely have the time learning the basics using the program in a Professional way before a better new one comes out throwing you back to zero :)