I don't think you're ever going to stop women being in competition with each other or men being in competition with each other.
As long as it's healthy competition ie: No bs, then I think it serves a good purpose.
When it diminishes to denigrating, catty, bitchy lies and innuendos (from men too), then it's only going to be the bs artist that loses respect and attractiveness in the long term...well, you'd hope so anyway.
It's easy enough to spot somebody who uses put-downs as means to try and raise the view of themselves. and unfortunately, this is often seen as drive and motivation in the corporate world.
Some people make such an art form out of it that you can think your having a normal conversation with somebody and then go away scratching your head thinking, "Hey! that person just threw a load of backhanded insults at me" ..haha.
But who cares? Those people will never have much contentment in their lives. It's a pity that they need to do this when they could be using their talents for goodness and not rottenness