You intentionally start small, because you will not be able to compete with an incumbent... because the incumbent is always going to go for the full solution.

Companies have never won. You're always either fighting for survival, or fighting for relevance.

The only way to avoid disruption is to constantly do what you would if you were just starting out.

The 10% between 90% done to 100% done takes most of the time, causes most of the stress, but is all of the value.

The product that wins is the one that bridges customers to the future, not the one that requires a giant leap.

I believe there's plenty of market for each; we're talking about an ecosystem that is going to support billions of devices, so a competitive landscape is good for consumers, developers, and the platforms alike. Apple brings a smooth elegance to its devices and platform, with the best marketplace experience to boot. Google brings a higher volume of devices as well as a more diverse ecosystem to interact with. The real story here is that Microsoft is nowhere to be seen, ending a two-decade monopoly and creating biggest opportunity for software startups probably ever.

The only barrier to entry you can create is to consistently build a great product.