I always find these ideas funny. Been working with computers for decades and never once have I thought software “malleable”. Maybe back when I had to actually type the program into my Speccy to get anything to work… but then again it wasn’t a “let’s make software malleable” situation, it was more of a “this is how we can distribute software right now” type of thing.
Software was never malleable. User agency is a tale you tell yourselves to try and justify your rose-tinted glasses. Could things be better in computer world? Absolutely. But you could’ve ask us the same way back then and the answer would still be “absolutely”.