From a game perspective, that makes a lot of sense. InfoSec and all and it's far easier to monitor people in house.
I was thinking though, HR would have a field day with this. Nepotism?! No no no.
Anyway the thought crossed my mind if you wanted to stir the pot a little more, you'd make people in organizations with HR be required to have relationships outside of their workplace. This would encourage both conflict and RP in those organizations without having to do near anything else. People having a relationship in another organization are more vulnerable to leak things, turning lovers against their organization, all kinds of things. At the very least it would promote more fraternization and thus conflict between organizations. Additionally, you'd have another layer of illicit romance in terms of inter company romances that are sure to bloom despite the policy.
If this idea was taken seriously I think you would want to probably have some kind of grandfather clause for people who have established relationships. Maybe they could file a one time waiver with their corp while the policy was being enacted to be exempt. After that, in organization relationships would be verboten and they would naturally phase out over time as couples break up or are retired for other reasons.