Why Apple can’t pull the plug on OS 9

BusinessWeek: “The new OS X operating system is a triumph, but Jobs & Co. need to keep its predecessor on life
support until Mac heads get the message

Has the Mac’s classic operating system become like Ole Betsy, a
beloved but aging workhorse that must now be put out to pasture?
If you ask me, this Ole Betsy has stayed around way past her prime.
Still, she ain’t a-going out to graze on the lower 40 acres any time
soon.”