Software complexity grows over time such that the only way to compete is to build on a base of existing software.

If the base is GPLed then you *effectively* can't sell it. This is wonderful for big companies because it means that our only options as developers is to work for them.

If the base uses a BSD license, the little guys are able to use it and can compete on a level playing field with the behemoths like Microsoft.

If more developers would start using the BSD license for our open source projects it's my opinion that we could free ourselves from the domination of the software giants and generate a new wave of little-guy MSVs (micro software vendors) that will wipe out the Microsofts, IBMs, Adobes and Apples of the world.