PayPal Co-Founder Warns Financial Giant is Creating De Facto ‘No Buy List’ by Banning Dissidents Says Silicon Valley's woke crusade will cause more extremism. Image Credit: Share Email PayPal co-founder David Sacks warns that the financial giant is creating a de facto ‘no buy list’ by banning people for their opinions, a move that will actually increase extremism in the long term. In an article posted on Bari Weiss’ Substack newsletter, the investor explains how PayPal’s role has been completely reversed from its initial objective of helping ordinary people not be dependent on large financial institutions to start a business.