Equality has nothing to do with it; it's all about money and sponsorships.
The IOC refused to introduce women's ski jumping event though that proposed event would have many more competitve countries.
Women's hockey has turned out to be the biggest niche sport of all.It has been between Canada and the US since its inception. It's a challenge for many other competing countries to even field a team, whereas these two countries have regular leagues. The IOC was sold a bridge in Brooklyn regarding the introduction of this sport to the Olympics. They were lead to believe that it was a fully contested competitive sport . It's such a waste of ice time , Olympic housing , and medals.