You can scream all you need that CCI has not done anything, and type/yell to others there isn't proof of wrongdoing. But, what are you screaming about? That CCI is a scapegoat? That the Department of Education is not doing its job? That CCI should be able to operate outside of any regulations as they suck taxpayers and innocent students dry? That there are countless articles and voices who think differently than you?
Are you upset this workplace leaves you and your career in the dark? That bankruptcy is still lurking around the corner? That most of your immediate upper management have limited backgrounds and interests in education? Are you upset that employees and students have spoken up to officials concerning the shameless practices of CCI? That high schools don't want these schools coming by to recruit? That numbers are dropping quickly and you might not be able to make your money? Are you upset that you don't work for an ethical company, and now it is all coming to light?
Even if nothing happens, CCI is like all large unethical companies. Most people don't care for them. Most people respond "Yuk." So suck it up if you choose to support these schools, don't yell at others, and remember, free independent thought is what makes education so exciting.