I tend to agree with your reasoning for the most part. But what makes me wonder about the amount of money that CBS will be willing to invest in DS9/Voyager is the fact that both seemed to struggle in strip syndication.
Neither series seemed to have much life after their first runs here in the States.
I think they've been more widely syndicated than Enterprise
, but you may be right. HD remasters are hardly a sure thing for either series, because syndication revenues are the main reason to make the investment. In comparison, home video is ancillary revenue, the market for which is rapidly shrinking.