With the low cost of cloud storage, why couldn't we move this old data out to the cloud, with basic instruction manuals and compilers?
I understand that it might be petabytes of data that needs to be stored, but that just isn't that much money compared to the value of acquiring the data first hand.
And it could be done before all of the people who know the computer languages and formats have all passed on.
As hard as it will be to replace the Pioneer data streams, it is even harder to replace the human ingenuity that created it in the first place.