I am a pretty heavy buyer of content, and while I have used both Poser and D/S I vastly prefer D/S. Poser always seemed more difficult to work with, and I stopped updating it in 2012. In any case, I do buy a lot of poser props and environments - I can handle reshading them without a problem, it usually isn't necessary. What everybody is complaining about is the figures though - and Genesis 3 and 8 don't work in Poser because of some nefarious scheme by DAZ to destroy Poser, it's because Smith Micro can't be bothered to supply support for the figures. DAZ is in the business of selling content, who's program it is used in doesn't matter to them. Male_M3dia is completely correct, the place you should be sending those cards and letters to complaining about a lack of content for Poser is Smith Micro.

The wacky thing here is that Smith Micro doesn't create content, and really haven't put much time and effort into creating a market for it either, Content Paradise is woefully out of date. So they aren't in competition with DAZ either. It shouldn't matter to them who creates third party content.

So, you want content that works in Poser? You need to talk to the guys that maintain Poser to make them include support for content. That would be Smith Micro.