On the valuation of deep development technologies: 

since to step into estimating monetary values of individuals bits is premature, for a variety of reasons, consider taking stock ie accounting and notating for instances composing excesses in development.  These excesses are effectively surpluses at the time and by increments can constitute a stor.  Effectively, for tech which has become obsolete in their ecosystem, much of their informational value is not lost; so for example, for an entire slate of tech utilizing comparable bases, an emulator or even emulator os may help collect and aggregate for review and future use.  

The informational value has to do with the availability of data regarding lineage development and how dev can be qualified retrospectively in new contexts or was qualified at the time, and more importantly, what bits can be found and selected for current utility, adaptations, and knowledge today.

Just one way in which taking stock for a future oriented virtual economy may find beginnings.