Debt Collection Fraud

Then a plea admitting responsibility by a company or the CEO will be used against the company or its officials in all civil cases in the future regarding similar fraudulent debt collection company?

Yes, in case law, Tort Law, we base our decisions on past cases.

It depends on many other issues: your jurisdiction, the similarity of issues and parties, etc. In some cases, a party is authorized to use a finding from another case in theirs. But the factors must be just, and it is a very complicated doctrine. We need more facts to answer this question.

It is the judge's discretion whether or not it will enable some evidence to consider. More often than not, a judge will not permit testimony about prior judgments. It happened because a trial is not evidence of guilt in the present case, but it is highly prejudicial and likely bias the jury.