I agree it is really stellar. The billion dollar concept for me though is encrypted repo torrents. Imagine a group of servers that are hosting encrypted chunks which form the basis of a homomorphic encryption protocol for distribution using forward error correction to allow recovery of the deltas if n of m components of that delta can be recovered. Basically if you have the key you can pull out of this amorphous cloud your source code, and if you don't have the key you won't even know it is out there.

I started building a toy version of this about 5 years ago but got distracted by work. Essentially the repo key encrypted the packfile, the storage reliability layer used its another key to encrypt the chunks. The latter key would find the chunks, with enough reliability to re-create the encrypted packfile, which the latter key could decrypt and apply to your repo.

A very fun problem in distributed systems and data structures.