The GPL is a viral license; it's an intentional choice on their part, and "viral" and "infected" are pretty accurate ways to describe it. For libraries. We are

The GPL is a viral license; it's an intentional choice on their part, and "viral" and "infected" are pretty accurate ways to describe it. For libraries. We are talking user land tools here, which are standalone. Providing a new bash version doesn't 'infect' any other software. I think the extended (or some would say more explicit) patent license in the GPLv3 is what troubles many companies.