The G3 certainly wasn’t a powerhouse. But there have been plenty of instances where off the rack configurations of G4, G5, and Intel iMacs encroached on the lower end of PowerMac/Mac Pro.
Laptops sell well because of their wide appeal. M architecture allows laptops to operate with desktop power, but that doesn’t change its market.
iMac has always been an attractive product to creative professionals. MacBooks from their roots were never very comparable. And now apple is flipping that script and leaving iMac in the back aisle.
This purely market-driven approach post-Jobs is lame. It goes hand in hand with the iOSification of macOS and the general incremental nature of their product line updates
Apple plays it safe, lets the industry innovate around it, etc. they have the best product ecosystem and if it weren’t for that and my complete lack of excitement for Windows, I’d be switching. And I still might, form factor/design innovation is what brought me to them in the first place