When a company takes over insolvent company, does it create monopoly?

Company or a  Corporation is a juridical person, ,,but this  is not to say that one company can be taken over by another company, like a Sovereign nation conquering another Sovereign Country.and subjecating it under its terms. In every merger or amalgation, of a company, public interest is involved with commercial wisdom as the crypto guiding rules,  and thus,  equitablility between the parties will govern the parties.   

Taking over an "insolvent" company is totally different connotation to "monopoly".

Be specific to the facts vis-a-vis dispute / concern / problem / locus standi if it is "NOT" a hypothetical  academic time pass topic for debate.

What are the facts? What is the context?