It is not only Daz and Poser. There are 3 program that can handle poser-files, Poser, Daz and C4D. The Cinema plugin Interposer does 90% of what Daz/Poser can do, and much what they cannot. It is especially strong in animation. Regardless what program you work with you think "Poser files", "Daz-files" would be ridiculous. Poser is on its way to become a generic term like xerox. 

The guy who did Interposer is now hired by Daz to do Genesis. It will be interesting to see if they will do a separate program for Genesis or one program for both.