No need to guess, just ask. I mean design and production, not retail. Even if you buy jeans and T shirts, the designers and producers are majority female or gay men.
Might be a cultural thing then [1]. I do agree that there are far more women in fashion design and production than men. But I can off the top of my head think of several "fashion startups" with (one or more as far as I know straight) male founders or head designers [2]. Something I can't say about women in technology startups.
[1] Sweden is the home of H&M and also supposedly one of the more gender equal countries in the world.
[1] Sweden is the home of H&M and also supposedly one of the more gender equal countries in the world.
[2] Acne, WeSC, Odd Molly, J.Lindeberg, Cheap Monday/Weekday, Our Legacy, Peak Performance, Whyred etc.