Well, well, well. Seasteading:
Why seastead?

We believe that current political systems are outdated and work poorly, for two reasons. One is the lack of a frontier - a place to go try out new forms of government (like the crazy new "democracy" which sprung up in far-off America). The other is the lack of mobility on land that happens because people are tied to buildings and buildings are fixed in place, which makes it hard to change states or countries, let alone pioneer. Seasteading fixes both of these.

It opens the oceans as a new frontier for pioneering, a frontier with a fundamentally different quality - fluidity - that lets entire cities be rearranged and reshaped constantly. If you don't like your government, you can literally "Vote with your house" by detaching your seastead and sailing off to another city. In the long run, this will turn the oceans into a laboratory for innovation in social and political systems. No specific ideology is necessary: Seasteads will empower people with a wide variety of beliefs to self-govern and serve as examples (good and bad) for other societies.
Highly agreed.

Man, I hope this works. So far, Peter Thiel contributed $500,000. But this is where I would want Bill Gates and Warren Buffett to be spending their billions. Last I heard, their foundation was having trouble finding enough worthwhile projects to fund. It's sad they don't see the value in this.

The Gateses seem to be focusing on investments that directly improve the human condition, but forgoing investments that will improve our ability to improve. We are in dire need of investment in these areas.