So that particular calculation for automatically "adapting" is simply an example of why I am doubtful that automation is the way to go, since basically all it amounts to is carte blanche for all miners who want mining to be limited to a privileged elite to simply spout the biggest blocks permitted, constantly, thus automatically driving up the size permitted, letting them spout out even bigger blocks and so on as fast as possible until the few of them left are able to totally control the whole system in a nice little cartel or oligarchy or plutarchy or kakistrocracy or whatever the term is for such arrangements. (Sounds like an invitation to kakistocracy actually, maybe?)

Basically automatic "adaptation" seems more like automatic aquiescence to whatever the cartel wants, possibly happening along the way to leave them with incentives to maintain appearances of controlling less of the network than they actually do so that if/when they do achieve an actual monopoly it will appear to the public as maybe pretty much any number of "actors" the monopoly chooses to represent itself as for public relations purposes. (To prevent panics caused by fears that someone controls 51%, for example.)

-MarkM-