Thomas R. Eisenmann, Geoffrey Parker, Marshall Van Alstyne have written a paper on software platforms evolution, Platform Envelopment.

The abstract:

Due to network effects and switching costs, platform providers often become entrenched. To dislodge them, entrants generally must offer revolutionary products. We explore a second path to platform leadership change that does not rely on Schumpeterian creative destruction: platform envelopment. By leveraging common components and shared user relationships, one platform provider can move into another’s market, combining its own functionality with the target’s in a multi-platform bundle. Dominant firms otherwise sheltered from entry by standalone rivals may be vulnerable to an adjacent platform provider’s envelopment attack. We analyze conditions under which envelopment strategies are likely to succeed.

Eric Schmidt speaks at Bloomberg Headquarters on October 20, 2008 in New York City about the future of technology: