A lot of people read erotic romance, and they tend to be voracious readers. They tend to be readers who embrace digital formats. That makes them a potential gold mine.
This is why I think it has been quite natural that epublishers like Samhain and Lyrical have come to focus on erotica and romance. I also think it is only natural that erotica and epublishers (like Harlequin) have branched out into epublishing.
However when a print only, intensely literary press (like Salt) known to have some cashflow issues suddenly opens an erotica epublishing imprint and a romance epublishing imprint that starts to look like a... readership booty call.
And when Dorchester goes digital to save costs, while cutting staff, and keeps selling ebook that they no longer hold the rights to that is a... readership booty call.
Which is to say, they want your money but may not be willing to kiss the genre or format on the mouth. And I have a suspicion that this tactic isn't going to have the profitable outcome they are hoping for.