I don’t necessarily agree with Jeff Johnson’s conclusion that major software upgrades are impossible on an annual schedule. I also don’t know what he’s looking for, as someone who worked at Apple during this time quality improved substantially in 10.6 Snow Leopard and continued. Most bug fixes don’t get a marketing line item or even much fanfare. We were all users of what the OSX guys were doing and lived on the dogf…
When companies use to charge for OS … and the releases were staggered by 3-4 years, I would have agreed.
But when OS upgrades are free, and happen yearly - there’s a different user expectation.