"space limitations"? How much space does it take to add the footnote: 'The reader is cautioned not to read this part of the Old Testament too literally'?
Isn't it the case that for many centuries Genesis and most of the OT was accepted as a factual account of how the Cosmos (as it was observed and understood in the late Bronze Age) came into existence? This is why I asked about the point at which scholars started to rethink this approach because I suspect it was in reaction to 'problems' thrown up by the Enlightenment.
Many 'Study Bibles'? Why not all? I can't ever remember seeing what you call a study bible.
Even copies of Genesis online omit to mention that much of that book should be read as poetry rather than as assertions of fact. Can you point to a generally available online copy that cautions the reader against reading it literally?
There are plenty of Bibles that do. Of course not every Bible is going to have it when there are space limitations in publishing.