Microdoc picks up on the same problem of lack of diversity within networks, outlined in my last post. Microdoc: Email, Google, Microsoft and the Lack of Diversity
If this threat is real – and I believe it is, I also think that it can be modeled so that notional danger thresholds can be set for when the code in any one market varies by less than a certain percentage.
The danger threshold would fluctuate over time according to two variables: the density (degree of connectedness – of machines connected to the Internet , not links within the Internet – which being one directional would reduce this factor by a half) and trends in viral activity (i.e. the amount of malicious code).
In order to provide provable evidence and monitor results an industry independent organization could provide empirical evidence and suggest anti-trust measures to protect against the specific dangers of the combination of homogeneity and connectedness within networks.