Apple was in some ways on the right track with an OS that had no command line. Not having a command line meant you had to get serious about how to control things.
The trouble with the original MacOS was that the underlying OS was a cram job to fit into 128Kb, plus a ROM. It didn't even have a CPU dispatcher, let alone memory protection. So it scaled up badly. That was supposed to be fixed in MacOS 8, "Copeland", which actually made it out to some developers. But Copeland was killed so that Apple could hire Steve Jobs, for which Apple had to bail out the Next failure.
The trouble with the original MacOS was that the underlying OS was a cram job to fit into 128Kb, plus a ROM. It didn't even have a CPU dispatcher, let alone memory protection. So it scaled up badly. That was supposed to be fixed in MacOS 8, "Copeland", which actually made it out to some developers. But Copeland was killed so that Apple could hire Steve Jobs, for which Apple had to bail out the Next failure.