Dunno. What would be the status of a company contracted directly by the government? It may be the the immunity is extended in such cases. I would assume that that avenue was at least considered by Blueport's lawyers.
‘What would be the status of a company contracted directly by the government?”
Generally you are responsible for your own company regardless of who you contract with. The govt requires you to carry insurance and sometimes provide bonds. But I’m not a lawyer.
My guess is they were simply outspent and suing SAIC is beyond their financial power. SAIC probably has more lawyers than this company has total employees.
Their best bet is to go to Congress and seek some sort of support. The big defense contractors are pretty ruthless to small companies.