From what I can tell watching DS9, the Vorta and the Jem'Hadar pretty much hated each other. The only reason they managed to work together was because the Founders said they had to. The Vorta seemed to see the Jem'Hadar under their command as nothing more than cannon fodder, and the Jem'Hadar only obeyed the Vorta because it was "the order of things," and they controlled the White supply. The Founders seem to have engineered or conditioned their servant races to regard each other with mutual distrust or dislike.
Now on some level, it seems counterintuitive to have them hate each other, but on closer examination, it plays right into the Founder's paranoia regarding "Solids." What if the Jems and the Vorta could come to respect, trust, and even like each other? What's to stop the two races from banding together and rebelling against the Founders? One Jem'Hadar confessed that he had never even seen a Founder. If the Jems were well-treated by the Vorta, who had control of everything, might they not even go so far as to start seeing the Vorta as "gods," and not the near-mythical, invisible Founders? Might the Vorta, who are cloned and have no offspring or families of their own, begin to regard their brave Jem'Hadar soldiers with affection, perhaps even growing to consider them their "children?" So the Founders had to make sure that didn't happen by having the two races barely tolerate each other.
I just thought this might be interesting topic for discussion. It also makes me wonder if perhaps there aren't some Vorta/Jems in the entirety of the Dominion that do manage to respect and trust each other. I mean, from what we saw on our screens there was certainly no love lost between them (Weyoun 4 was killed by his First, Keevan sent his Jem'Hadar to their deaths), but maybe that wasn't always the case ...
Now on some level, it seems counterintuitive to have them hate each other, but on closer examination, it plays right into the Founder's paranoia regarding "Solids." What if the Jems and the Vorta could come to respect, trust, and even like each other? What's to stop the two races from banding together and rebelling against the Founders? One Jem'Hadar confessed that he had never even seen a Founder. If the Jems were well-treated by the Vorta, who had control of everything, might they not even go so far as to start seeing the Vorta as "gods," and not the near-mythical, invisible Founders? Might the Vorta, who are cloned and have no offspring or families of their own, begin to regard their brave Jem'Hadar soldiers with affection, perhaps even growing to consider them their "children?" So the Founders had to make sure that didn't happen by having the two races barely tolerate each other.
I just thought this might be interesting topic for discussion. It also makes me wonder if perhaps there aren't some Vorta/Jems in the entirety of the Dominion that do manage to respect and trust each other. I mean, from what we saw on our screens there was certainly no love lost between them (Weyoun 4 was killed by his First, Keevan sent his Jem'Hadar to their deaths), but maybe that wasn't always the case ...
The Founders are hands-off rulers, isolationists; they don't like getting involved in day-to-day affairs within the Dominion. If they made the working relationship between the Vorta and the Jem'Hadar a pleasant one, it would therefore make perfect sense for the Founders to wind up "shunted out" of their own empire, particularly if the relationship developed as you outlined above. By ensuring that all that keeps the Jem'Hadar and Vorta together is "the order of things" (an order defined in terms mandated by the Founders and which is important to the two solid races precisely because the Founders encoded in into them genetically), the Founders also ensure that both races have only one true trunk of relational awareness - to the Founders. Allowing Vorta and Jem'Hadar to build a sense of true relational awareness towards one another would be competition. More than the simple desire to maintain their monopoly on power, the very idea of solids relating to one another in a context external to the Founder's order is terrifying to the Link. It goes beyond politics and into the psychological problems underlying their politics. As far as they're concerned, "solids working together independent of us" always equals "solids working together against us". Allow solids to conspire among themselves and they'll inevitably come to the Link and attack us, for such is the nature of Solids. They hate us on general principles.
That would be another safeguard, preventing the Vorta from ever rebelling as a group. The whole Dominion structure is "functional dysfunction." It just screams PARANOIA!

