I apologize in advance for nitpicking, but the examples you're using both showcase male romantic leads that are extremely possessive and jealous, complete with paranoia and a kind of precautionary stalking, and then romanticize that characteristic as though it's something desirable in a male partner. Both of them would be infuriated by the very idea of lovers on the side.
Both stories are continually called out in academic studies as being a result of a patriarchal mentality, even while being written by women.
The point you're making though, about there being other important factors in the "usefulness" of a man than the size of their muscles, is completely understood.
Oh, you're completely right. The actual characters are abominable criminals and - in the case of 50 Shades - the idea of consent is abandoned entirely in ways that are quite terrible. It was only that no one example immediately came to mind about the occupation, and then the Honest Trailers parody of 50 Shades came to mind.
Just wanted to clarify that I am aware of the issue here in the portrayals.

And to add to that, the meta criticism of female writers internalising tropes from the culture.