The main point of ESR seems to be that it is economically bad for companies to close the source of their product, which is not very true considering apple has very good success rate with both MAC and iPhone. He has not give examples of his "study" about companies which lost because of closing the source of some open source software. If lawyers and corporate bosses are afraid of GPL, let them be. How can you justify removing of GPL just because lawyers and corporate bosses who never contributed anything to free community are afraid of it?