I'm surprised they don't mention Steve Jobs being kicked out of the company by John Scully in 1986, the decline in the company's fortunes from 1992, and Jobs coming back to save the company in 1996.
The problem with the Lisa was that it was built by a bunch of ex-HP engineers, to whom a $10,000 price tag wasn't extraordinary -- it's not like they bought their own equipment, the company did. But that was dramatically different from the Apple II+ customers, to whom $1500 was affordable. The Macintosh used the same processor (68000) and better disks, and a simpler GUI OS to fit in the more limited space. This made a much more successful, if more limited product, at a $2500 price point Apple customers could afford.