So I would argue that #2 is in fact "drive efficiency", except that its also never 1 then 2 then 3. You can drive growth early on to gain traction, then drive e

So I would argue that #2 is in fact "drive efficiency", except that its also never 1 then 2 then 3. You can drive growth early on to gain traction, then drive efficiency to improve margins and make new features more tractable, which drives more growth which further drives more efficiency investment etc. etc. Some things don't have to work on efficiency for a long (years) period of time because growth is just that much more important now, even if it means more work later to make things efficient. Some things just drive efficiency from the very beginning because they just have to be efficient to be worthwhile. Most things straddle the two.