Pretty sure one of the downfalls of Apple in the late 80's/early 90's was having too many products out there. I realize the desire to want to have innovative products, but I'm not sure how well the "throw everything at the wall and see what sticks" will work.
Apple had too many products that no one was buying. Apple still doesn't make that many products:
MP3 Players
Phones
Desktops
Laptops
Apple TV
Wireless Routers/Backup
Tablets
It's a pretty tight ecosystem, with room to grow. Even if Apple makes the iWatch and a full-size Apple TV, that's only two more products, which only serve to augment what they're already doing. They're not out there trying to build printers or stand-alone cameras. And they don't leave failing products on the market.