Anybody who wants to advance the open web should focus his efforts on a P2P library with extremely good NAT traversal capabilities that is extremely reliable and simple to use and supports as many programming languages as possible - certainly not just C++ or C. It needs to be deployable under a permissive license on all major platforms macOS, Windows, Unix, Linux, iOS, Android, and browsers, and may not transport any data or chew away bandwidth without allowing total control over this by the programmer and end user. It needs to have a dead simple, almost idiot-proof API. The resulting network on top of IP needs to be searchable, not too high latency, and route to any endpoint on it.

That's still the biggest hurdle for the Open Web. Everything else is secondary.