Written and Practical - Unnecessarily gendered products

Just when I am half way through my research and finally home in on what I am interested on, I come across a full tumblr page dedicated to it.

http://unnecessarilygenderedproducts.tumblr.com

Marketing segmentation 

https://www.youtube.com/watch?v=3JDmb_f3E2c

Dividing it up into smaller groups is good for business. Is it?

Narrowing it down means they sell more versions of the same product

Lego for girls - trippled the sale of lego and scored the company a 25% increase in global revenue

Same for everything, if they make two types they can sell more of the same product. Also the products are often sold at different prices. 

WHY ARE WE NOT STOPPING THIS?

This video suggests we ignore anything that is not in our section of the store, we only look at what is advertised to us.