Yikes! Indie Go-Go takes 9%? That's pretty painful to the people who were good-heartedly trying to support this project.
I read somewhere that for this campaign IndieGoGo made an exception and won't be taking a cut.
I doubt they're refunding the interest while it sat in their accounts. Even 18 Million with one month of interest is enough to start a company.
We have not heard the last of this.
I think you need to check your facts. My understanding is that Indiegogo only takes a percentage of the funds that are received by the Project Creator. Since Canonical didn't get a penny, then none of its supporters should have lost a penny.