Exactly. Current revenues for Apple are a result of decisions they made years ago. You can't look at this quarter's numbers to evaluate decisions made today.
If anything, Apple's fat profits are a danger sign. That kind of money attracts people who like spending lots of money. It removes any need for discipline. It discourages innovation, because people are afraid to do anything that might disturb the giant cash pipeline.
Current revenue doesn't necessarily say anything about future decline, you need to look deeper than that.