I'm translating a German press release about a product that became a great tool/solution, but it had never been intended to be developed like that in the first place. It more or less happened by accident.*
I came up with this translation:
Few developments that turn out to be good have been intended and meticulously planned from the start.
This is a rather literal translation, but it sounds quite awkward. Is there any idiom for something that turns out better than expected and wasn't planned as such?
* For reference, in German, it's “Nicht alle guten Entwicklungen waren von Anfang an beabsichtigt und penibel geplant. Auch die Initialzündung für XXX geschah mehr oder minder zufällig.”