Not to nitpick, but we're currently phasing the manipulators out of use.
But - yeah, I see your point. Still, I strongly believe that there is a difference between employing sods on organisational level and on personal level. (And yeah, at this point I'm speaking rather more IMO than I originally intended. It's your argumentative win, sir!
)
First, it's the matter of equality. As you rightly pointed out, we're all slaves to ARM; and so currently are sods, it puts us somewhat on the same level (note: I do not seek enforcing "different but equal" here, or some such, I am merely stating that we are comrades-in-slavery at the moment
). But if we allow sods to be personally owned, then by the same precedent we can probably own other former convicts - and things go to hell from there.
Second, it's a matter of specific ends justifying the means. As black, smothered and baked our ARM/HMRC souls are, I do believe that some small shreds of morality remain - such as, we don't inflict suffering as means of entertainment, we only do it when ordered/when we think our orders entail that. (Mesk's biographers would disagree, but he has honestly regretted ever since M5, and then paid full price for it; also, of course, due orders and cruel entertainment often intersect for us - rarer and rarer since we became ARM - but that's still acting in the line of duty, not for our own sake.) "Governmental" slavery of ARM is impersonal, as is, by large, Steve (even though Dev would strongly disagree with me here) - he does things because humanity needs them, because his programming calls for him to do so - and in that, serving (and belonging to) him is not nearly as troublesome as it would be serving a specific debased human Magister, with personal needs, interests, and so on. If we introduce personal slavery, though... Well, look at the reasons why Comrade P.'s character looks into acquiring sods (NB: female ones, even). Sure, some convicts would use them "in their line of duty" as tools of war or their trade or whatever appropriate. But how many would utilize them in their own gain, or interest, or amusement, etc.?
Unless there were a system which would prevent "undue" use of sods (and remember the point 1) above: what is applicable to sod slavery, is applicable to former convict slavery), such abuses would likely be the norm rather than exception - and I think it could be hard to invent on. (By-mission deployment is one such system; "bill of rights" or some similar stuff might be another, but even I am not mad enough to start giving "rights" to anyone in the ARM
. Maybe some kind of "Regulations Manual" which strictly prohibits unintended uses of sods? But then it would need to be enforced... ...By, say, a commissar, which we actually have one. Hmmm, this
might work, I guess.)
(Of course, here you can point out that brain-pilots can often be abused for the manip-user's amusement, and there is nothing to prevent that... Well, I don't have any good answer to that except "we also need to monitor their use as well". But I simply know that open, unashamed personal slavery is a line on the sand I'm not ready to cross.)