I can tell you why I have not purchased a Blu-Ray player:
- There have been too many reports of buggy players not properly playing the discs, where one must constantly upgrade the firmware to get the stupid thing to work (if the manufacturer even bothers making new firmware available).
- I don't like the region limiting crap on the players. It is for price fixing and censoring what one can watch. (With DVD players, I always research how to hack it to make it region free BEFORE I buy, and if a player cannot be hacked or is not out of the box region free, I don't buy it—NO EXCEPTIONS.)
- The cost of the software is too high.
- The selection of the software is too limited. There is no way I am going to spend $400 on a player to play just a half dozen or so movies that I want to see.
All of the above needs to be fixed before I plan to buy. (Of course, not all players have to be bug free, but the one I buy needs to be, or I would return it for a refund.) I would be perfectly willing to spend the current $400 necessary to have a player, but not until they deal with the issues above.
I don't expect that everyone who has not purchased a Blu-Ray player is like me, but I doubt my reasons are rare.