Imagine 20 to 30 years out and pretend your favourite startups today have been wildly successful. What kind of world will they have created? Google seems to be on a quest to develop AI and provide it to everyone for free. SpaceX is aiming for a thriving Martian colony by using rapidly and completely reusable rockets and spaceships. Tesla is working towards most ground transportation being fast, electric and solar. Planetary Resources will mine asteroids for rocket fuel to build deep space gas stations, and for precious metals to return to Earth for manufacturing.

If each of these endeavours is successful, the 2030s are going to be an incredible time: commonplace AI, spaceships, renewable energy and cheap, clean transportation. What kind of society will we be? Will those technological changes shape humanity as a group?

I took a pretty narrow focus in picking the examples above; what startups do you imagine 20 years out, and what happens when they succeed?