"At the end of every seven years you shall grant a deletion of the data. And this is the form of the delete: Every data collector who has recorded anything on his neighbor shall delete it; he shall not maintain any of it about his neighbor or his brother, because it is called the Lord's delete" [1]
What is the connection you are drawing between those two things?
A census was used to assess a nation's fitness for battle and to set a taxing expectation.
Revelation is discussing the state of affairs under the rule of Nero (the man whose name has the number 666, or 616 depending on the source of your translation). Presumably, it became difficult to do business if you were not known to be loyal to the emperor.
(Side note: You are probably meaning to reference 2 Samuel 24 / 1 Chron 21 when you claim that unsanctioned censuses were prohibited, though that's never actually stated. Just, everybody in the story knows that what they're doing is wrong. But plenty of commentary has been written about why David's census was problematic.)
I think this is actually hitting much closer to the intention of Levitical law than people realize. Data and debt are very strongly connected, and I think probably always have been.
This is entertaining to game out the idea that anything that happened digitally more than 7 years ago just disappears.
A rolling Nothing that just eats anything that's 7 years in the past. A Great Oubliette into which we just toss anything from 7 years ago.
I think this would make an interesting dystopian novel.
Why stop at digital data? All memories roll into nothingness at 7 years, to be replaced by whatever the brain is forced to put in their place to resolve any apparent dissonance. A select few have discovered the secret and used it to build unimaginable power (e.g., building armies by promising riches and wealth after an 8yr term, using the Greate Oubliette to convince recruits they only have 1 yr left for the entirety of their lifetime of service).
[1] Deuteronomy 15-17