At one time it did thrive, to an extent, but that was a time when there weren't nearly as many other options and the overall 3D hobbyist/freelance user base (and content artists in general) was much smaller to begin with. DS, iClone, Blender, none of those existed, and UE4, Unity, etc., weren't free for everyone to use. There weren't 100+ other content stores out there, and the ones that did exist were usually targeted at professional artists with steep price tags. Maya and 3DS didn't have a $300 LT version for hobbyists and freelancers. Poser was unique in its market position at the time so it could do pretty much what it wanted, however it wanted, without too much regard for how the 'pro' software did things. That's not the case today. You look at those other apps today and what is the common denominator? Most of their content is virtually interchangeable with minimal effort, or their devs have built plug-ins to make their content compatible with the top platforms with minimal effort. Upgrading Poser's code to implement ways of making Poser's content more compatible with other software is only good for Poser, and its users, from hobbyists to content artists.