This makes sense, it was the Fosters Brothers who shipped over the first Lager tanks (Not sure where I picked up this piece of wisdom, I think it was mentioned during a talk given by Chuck Hahn or at a brewery, Maybe at Cascade), so any beer that pre-dates Fosters would be pretty safe to assume was an ale.
I can't even imagine any of the Aus swill with a decent ale character
I would have assumed most of the changes made to recipes over time would have been done to minimize the cost for the breweries (for example lowering the Alc equals less ingredients and lower taxes but when sold at the same price equals larger margins), So I would have thought switching to Lagering would increase costs, longer ferments, needing lagering time ect ect.