That's because omegaverse (prompt) is only generally used in the yaoi realm for the purpose of a stimulating excuse for mpreg
There would be no point in creating a het manga with the omegaverse theme because women can already get pregnant. And if you wanted to use heats as a part of your plot there are better ways to incorporate it.
That is, unless you want to make a female alpha then that would be a dif story but then again most creators just don't do that (idk why)
I figured that was the reason too. When omegaverse became has huge as it is now, I was honestly annoyed because it "justified rape" where main plots of yaoi were finally starting to move away from it.
However, I would LOVE to see a story about an alpha female, that would be an interesting read.
You know whats wild? I've read so many omegaverse manga that goes in the direction where a male omega is quite rare (of course this doesnt apply to all omegaverse) but I've literally NEVER read an omegaverse with a female omega as the lead character, or at least omegaverse as we know it today. not 2013 wattpad version of omegaverse