Which resulted in businesses holding on to extremely old software and OSs because migration to the latest system was expensive and difficult. Now it's effortless.
replyMore like "you must be on the newest version of everything all the time, or you will get hacked".
replyBecause security fixes don't get backported, when they could, and few are still doing separate security vs. feature updates.
replyEven Windows is doing it now with CUs, bundling feature & vulnerability patches together, then deprecating the last version. You don't have a choice anymore, it's "accept the features or else"