@m@lgbtqia.space Algorithms fail, as more is learned about them, & also as more is learned about the math they rely-on..
Statistically, it'd be inevitable that storing stuff for future cracking, would work..
..except that the amount-of-stuff being produced keeps increasing, & therefore the amount-of-storing would keep growing exponentially, during this Punctuation ( in evolution ) between the Industrial-Revolution & whatever it is that is the resultant-Equilibrium which exists in the next century ( IF this-world survives its Great Filter, that-is, & that's not looking likely, at the moment ).
So, if they only save the high-value uncracked stuff, then .. yeah, that tactic definitely does make sense.