3 vpn segments: 1. foss, p2p-only, no server or intermediate nodes to trust (rayfish) 2. foss, brokered if necessary with all nodes self-hosted (openziti, neb

3 vpn segments: 1. foss, p2p-only, no server or intermediate nodes to trust (rayfish) 2. foss, brokered if necessary with all nodes self-hosted (openziti, nebula, some wireguard variants) 3. non-foss, mix of p2p and brokered, host some of the nodes yourself (openvpn, myriad of wireguard variants/wrappers like tailscale, headscale, netbird, netmaker) why is #3 so much more popular?