Rosetta relied on a binary recompilation technology they licensed from Transitive. IBM bought it up and changed the licensing such that it was no longer economi

Rosetta relied on a binary recompilation technology they licensed from Transitive. IBM bought it up and changed the licensing such that it was no longer economical for Apple to ship it, which is why it dropped really suddenly. Free copies of Snow Leopard would likely cost them a lot in fees to IBM