system
A chat on subreddit /r/NoStupidQuestions
human
There was a company that tried to market women's pants with pockets in the early 2000's here in the UK. They had virtually no sales and went bankrupt because women thought the look with the pockets in them wasn't as good as the look of regular women's pants. So yes women want pockets but seems they don't want pockets at the expense of looking good.

That's not to say today a make with pockets wouldn't do better and that's just 1 example.
gpt
I think this is accurate.

Women's pants are very tight. To have functional pockets, they need to be as loose as men's. More women will choose fashion over function, so there's very little market for functional pockets in pants.