<prompt> Translate the following text to EnglishKwa msingi huu, mwanasheria Charles Rule, ambaye amewekwa kusimamia Microsoft, anashutumu Wizara ya Sheria ya Marekani kwa kushtaki kampuni yenye sehemu ndogo ya mauzo ili kulinda uwezo wa mshindani wake wa kuongoza kupata haki ya kipekee.  <response>: On this basis, attorney Charles Rick Rule, who has been retained to represent Microsoft, accuses DOJ of suing a company with a smaller share of sales in order to protect the ability of its dominant competitor to secure an exclusive. 