The reality is that none of those things (except 8 and 11, which have strong offerings already) listed are billion dollar ideas.

This is just a reiteration of the current Internet strategy:

1. Target a niche. 2. Create a strong base. 3. Grow like mad. 4. Move into other offerings.

This is exactly what trees in a dense forest do - they grow up as fast as possible, and then when they're on top they branch out to both absorb more sunlight and prevent competing trees from outgrowing them.

So the real message is 'focus, focus, focus, until you get big and then try and do everything in your space before the second-starters outpace you.'

I'm not saying this is a bad thing - from an ecological perspective, it is very good for the forest, but not so good for the trees.