I don't feel that this concept of disruptive technology is the solution for everybody. But I think it's very important for innovators to understand what we've learned about established companies' motivation to target obvious profitable markets - and about their inability to find emerging ones. The evidence is just overwhelming.
If you understand cause and effect, it brings about a set of insights that leads you to a very different place. The knowledge will persuade you that the market isn't organized by customer category or by product category. If you understand the job that consumers need to complete, you can articulate all of the experiences in that job.
The iPod is a proprietary integrated product, although that is becoming quite modular. You can download your music from Amazon as easily as you can from iTunes. You also see modularity organized around the Android operating system that is growing much faster than the iPhone. So I worry that modularity will do its work on Apple.
The financial doctrines so zealously followed by American companies might help optimize capital when it is scarce. But capital is abundant. If we are to see our economy really grow, we need to encourage migratory capital to become productive capital - capital invested for the long-term in empowering innovations.