[iagooar]

Isn't it actually kind of sad, that such important researches don't get considered until 40 or 50 years later?

[riffraff]

I don't think such research wasn't considered, it's been used constantly in many projects since.

The reason why some platforms have "silly" choices like stop the world M&S GC, or interpreters with AST walking is, likely, that optimization wasn't a goal in the original implementation and it's hard to retrofit it while keeping compatibility.