While I agree PS3 has had no price cut I'll also say in the eyes of Average Joe Casual the and Average Jane Casual, you know the guys who buy a majority of the consoles sold? It has had revisions sell outs and changes made which could create more wonder as to the hard wares stability than you may think among the casuals who basically decide or market leader.
Constant changing of a platform can be more detrimental than good even if the result is a price decrease. A price drop tends to make people think nothing of it, just a reduction in cost.
Now am I saying reducing the price will make you a smash hit, not by any means. Am I saying revision will 100% surely hurt your bottom line, not at all. I'm saying that a price reduction will place no ill will at the consumer end, only good will. A hardware revision will create angered early adopters(not all but some) and second thoughts on the end of uneducated consumers who will wonder, 'why the change?'