In areas I'm familiar with, anything other than the largish single family house with big yard / garage / etc. gets built as strata title. Lots that ought to be wide enough to split either get duplexed or bare-land strata with two or more narrow houses ... for some reason, that's ok although freehold lots aren't.

Then "people want a house without dealing with strata" gets misinterpreted as "people want big houses on big lots". Not necessarily true, just that the premium for the BHoBL is the necessary price of not giving busybody neighbours power over your home.