I'm far more sub than I am Domme, but from my looks I'd make a good Domme (I'm a bit 'fantasy figure' for a Domme- very tall, big bust, authority figure in my home town, wear corsetry, spike heels and lots of black leather).
I get offers of male subs (usually quite honest offers) most weeks, despite having been as open as I can be about it not being a good time for me and therefore applications routinely being turned down.
If potential slaves are finding me out to offer their services in the knowledge that they are likely to be turned down then there really must be a gap in the market for straight Dommes.
If my health was good and my heart was in it at the moment then I'm sure I wouldn't be short of applicants- and my house would look fabulous (one of them is a decorator who offered to decorate my whole house as payment for being dominated). The fact remains that my fantasies are more sub than Domme and at the moment I'm both unable to enact any of them and involved in a vanilla relationship with someone who I wouldn't wish to hurt.