记下了一些key takeaway，虽然比较浅显、广泛，但作为创业者来说，都是一些good to know的基础观点：
- Monopoly is the condition of every successful business (p34)
- If you can't beat a rival, it may be better to merge (p42)
- For a company to be valuable it must grow and endure -- will this business still be around a decade from now? (p47)
- 4 characteristics of monopoly: proprietary technology, network effects, economics of scale, and branding (p48-53)
- Focus relentlessly on something you are good at doing, but before that you must think about whether it will be valuable in the future. For the startup world, this means you should not necessarily start your own company -- you could become tremendously successful by joining the very best company while it's growing fast (p91)
- Every great business is build around a secret that's hidden from the outside (p106)
- CLV must exceed CAC (p130)