[matfil]

I would be interested to work in a "10 groups of 10"-shaped company. I've never really encountered one, though, and I think it would be fairly unstable. Example failure mode: someone starts grumbling about "silos", and before you know it there's an effort afoot to standardise some or other technology or practice across the groups. At that point, one of the groups that's gone furthest in terms of formalising/making rules for that area almost always end up winning, and there's a gradual levelling up of process, and thus levelling down of autonomy.