It's worth noting that interledger itself is not a very open platform. It's peer to peer, and the peer network coil is using only has about 3. I can't just run my own pointer, or make my own coil clone. The ecosystem is actually closed by default!
I wrote a blog post about this a while ago, but in retrospect it's not particularly clear about the issues. https://boehs.org/node/interledger
Evan Boehs