Actually, Draco muses on the history of House Malfoy at some chapter I can't find right now, and how they're always the second-in-command to greatest leaders. Saying Draco would never agree to service is probably disregarding important and relevant information.

I was more looking for an excuse to get Harry and Draco married. ;)

But no, I think Draco is way too proud to swear subservience to Harry.

Namely, that you place such a high value on dominant roles for males and submissive roles for females that your perception is skewed. I'm curious if you think there might be some accuracy in that.

I'm not exactly sure what you're asking. Those have historically been the usual gender roles. I obviously don't think that everyone follows them or that everyone should follow them, because I'm not an idiot.