Well, Steve Jobs came back in 1998 and it took some time to get some cash from the masses with the iMac in order to focus on more professional stuff - so we could agree.
They didn't focus on professional stuff. Steve came and focused on consumer stuff like the iMac and the iPod. He actually discontinued the ultra expensive towers they had during the late 90's. Apple became more consumer oriented after Steve came. But due to performance increases in desktop chips, Apple could build those G4/G5 workstations which didn't cost an arm and a leg anymore, and professionals working in various industries requiring serious computing power started looking at Apple as an option. It wasn't about Steve, it was about Intel/IBM and CPU's getting faster and cheaper.
And they did buy some professional software and made it cheaper and Mac-only to drive more people in, which worked well.