One could also look at it as seeking to avoid needless duplication even more: By trying to give free software an advantage by being able to make use of GPLed li

One could also look at it as seeking to avoid needless duplication even more: By trying to give free software an advantage by being able to make use of GPLed libraries, or possibly to motivate people to release their new software under GPL because that allows them to make use of GPLed libraries, you might be able to avoid future work on the competing proprietary silos, instead focusing resources that are used for developing the particular kind of software on the one commonly developed free software solution, thus creating a much stronger 'us all together' instead of any kind of 'us' vs 'them'.