I had one person in my group who wanted to play something different than 4E (just for something different), so was bringing up Pathfinder...
Until the announcement for 5E, and now he wants to play that instead. So the announcement cost some sales in my group. It is inevitable that 4E products will sell less given their own announcement of 5E, though - even though some of their most recent products like Heroes of Feywild and the soon-to-be-released Elemental Chaos are pretty darn snazzy!
On a more serious note, this thread has a bit too much rancor in it. Discuss 5E without stirring up edition warring, or expect to get moderated.
Also, please report people you feel should be moderated, rather than confronting them.