The Newton, Pippin and Copland were done before and without Jobs. And Lisa wasn't his thing (the Mac was, he was remove from being involved with Lisa).
As for the G4 cube, it is just a failed model, not some huge company bet - every company has some models that don't sell well. Apple's laptops and iMacs still sold greatly from Jobs new iMac to this day - if a particular model didn't do well that's not exactly a big deal. In fact it's an expected part of doing business. Apple had several other such products on its way to becoming the #1 valued company on earth.
Also, what Nokia-iTunes fiasco? Nokia folded, and iTunes became the biggest music store, and then an app store and a streaming service.
As for the G4 cube, it is just a failed model, not some huge company bet - every company has some models that don't sell well. Apple's laptops and iMacs still sold greatly from Jobs new iMac to this day - if a particular model didn't do well that's not exactly a big deal. In fact it's an expected part of doing business. Apple had several other such products on its way to becoming the #1 valued company on earth.
Also, what Nokia-iTunes fiasco? Nokia folded, and iTunes became the biggest music store, and then an app store and a streaming service.