over-corrections to the problems they set out to fix.

IPv4 space will—not a matter of if, it will eventually be exhausted. given that i don't know if IPv6 could reasonably be considered an 'over-correction' in the context of needing a larger address space, unless you strictly refer to complexity of the successor analogies (i.e. IPv6 and Wayland).

a comment elsewhere in this post makes some informed projections about when the transition will go from being gradual to necessarily fully (at least for IPv4) co-operational.