Are you sure you're talking to the right CSA? CSA's site is <http://www.csatravelprotection.com>, and they do cover cruise line bankruptcy, among other things. According to the web site, they cover the following:
Sickness, injury or death of you or a family member
Unforeseeable financial default or bankruptcy of a tour operator, cruise line or airline that occurs more than 7 days after coverage is purchased
Adverse weather or natural disasters resulting in the complete cessation of travel services
A terrorist incident in a foreign city to which you were scheduled to arrive within 30 days following the incident
Labor disputes resulting in the complete cessation of travel services
Your home being made uninhabitable by fire, flood, vandalism or natural disaster
You are subpoenaed, required to serve on a jury, hijacked or quarantined.
I found their prices very good, too.