why are gls not produced as much as bls?

I mostly read BLs but occasionally I read GLs too, and one thing I've noticed is that there isn't enough GLs produced in comparison to BLs, specifically content variety and quality wise.
There is such a wide variety of BLs when you think about it, if I had to name a few it'd be guideverse, horror, online gaming friends, mafia, traumatizing, older men, priest yaoi, transmigration, angels and demons etc etc the list goes on and I think there's something for everyone's interest but when it comes to GLs, i found that there are extremely less stories that fit in any of these categories.
Why is that so?
Some might say you need a lotta creativity to come up with the story and stuff, no, there's such a lack of GL content that even adapted BL plots can be seen as groundbreaking, just because they're exploring new territory.
There's such a big sea of opportunities but creators aren't taking advantage of it. I seriously can't understand why is that so. ┐(´ー｀)┌