I think there are serious limits on comparing any of these numbers.
I'd strongly disagree that 3.5 was in any way a new edition. I continued using pre 3.5 with post 3.5 without a hitch.
Whereas 1E's life should include consideration that it was a near monopoly on the market for a while and it took some time for serious competition to even come about, much less start to be noticed.
2E's life was probably a lot less than listed, it just dragged on as a propped up corpse for the end portion.
If anything, "on the order of a decade" is ok, and "getting shorter as technology and increased alternatives grow".