The male-domination unfortunately persisted since 2000 but the industry has still grown leaps and bounds beyond anyone's imagination. So what seems to be the problem?
I'm not sure where the term "serious consequences" came from, but I think it's pretty straight forward that a group comprised of similar individuals will come up with similar ideas. More women, means more diversity, which means differing ideas, which means more innovation.
Silicon Valley is already referred to as echo chamber.
Many of the best technical minds from the top schools are going to Wall Street and to companies that help you share cat videos with your friends.
Some people think that's a problem (for society). You may or may not.