On impact of Google

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Google builds a search engine, forces the competition to start improving.

Google buys a webmail service, forces rapid improvements in the competition.

Google builds a browser, forces rapid improvements in the competition (Firefox).

Google buys a smartphone OS, competition already doing ok but probably tweaked some things.

Google starts building an inexpensive fiber network, makes incumbents sweat a little.

Google buys a smartphone manufacturer, forces competition to improve.

Next up, probably a mobile telco provider.

Google's thing seems to be improving the transfer and display of ads. Somehow they've turned that into a benefit to technology as a whole. It's a business model built on disruption.