Do you want to build a company? You will be building a world. Do it on purpose. The efficiency of digital technology - software and the Internet - have set us free to start a business at a cost lower than ever before. Entrepreneurship has become a hugely powerful instrument for change. The more companies and products rely on information technology, the closer we get to a Fourth Industrial Revolution which will take the power of artificial intelligence to enable not just automatic, but exponential productivity. We have never been more efficient. Doing things right is a given.At the same time, our world is changing, too. The global impact of information technology and the Internet on trade, communication, and production has had an irrevocable impact on how we live, what we do, and who we are. We face unique global challenges like climate crisis, forced migration, rising inequality, and extreme poverty. The time has now come to be doing the right things as well. It's about time to leave the differentiation between for-profit and non-profit companies behind, and embrace purpose-driven entrepreneurship, as a new approach, to tackling the challenges of the next age of technology.