I agree to a point....but sales are declining. YoY and QoQ iPhone sales along with market share have declined.RIM/BlackBerry didn't just lose market share; their sales declined as well. Apple has been steadily losing market share for a while now, but only recently did sales peak. Apple has nothing to worry about until sales start dramatically declining. Market share means very little at the moment.
I don't think it is doom and gloom for Apple. I think they have some great things left in them. I'm a customer and will continue to be one. Looking forward to the iphone 7 next month