Lol. The Lisa program almost killed Apple. And of course, it didn’t matter much that Jobs was “kicked off the Lisa”, Lisa was dead as a dornail on arrival :). The save was Mac, which wasn’t Jobs innovation at all, but simply an implementation of a Xerox design. It was still too narrow, and too closed, to really compete against IBM running the old Woz-like openness.
If he supplied something to Apple, it wasn’t innovation. Rather the opposite.
The Lisa was the result of that (paid for) Xerox visit to see the Alto, which with its commercial variant the STAR was completely proprietary and closed. The Mac was a separate, later project that was very different from what Xerox had. Apple introduced new things you take for granted now, such as drag-and-drop file manipulation, pull-down menus, self-repainting windows, the generalized clipboard and much more. No, the Xerox products did not have these. And Apple did it in a fraction of the space and computing power of the Xerox products.
Sadly, what Apple left behind was the fact that it was a whole system tied together with its object-oriented language and environment called Smalltalk. That was awesome and highly innovative. However, there is no way it could have been squeezed into a $2,500 machine at the time of the Mac.
If he supplied something to Apple, it wasn’t innovation. Rather the opposite.
Jobs supplied general vision, stubbornness and extreme anal-retentiveness for product purity and design. These are what made Apple products stand apart in the end, and what drove crazy sales. Did you know that the expansion lines in the concrete sidewalk outside of a street-front Apple Store's glass are at an exact multiple of the width of the glass panels so that all the seams line up? That's just for something that's peripheral to the actual product, and they take so much care.
User-oriented attention to detail to the level of obsessive-compulsive disorder, that's what makes the products great.