Miss Lee FL didn't start her own business, but is pushed into the role of CEO of a failing company
Kurokawa no Techo FL's methods of doing business are "unconventional" (in a legal gray area) and her business starts with money she obtained through blackmail, nonetheless kinda inspiring attitude-wise (she doesn't let herself be intimidated dealing with more powerful men)
Historical:
Oshin Drama starts in 1983 when FL is the matriarch of a business empire/super market chain, how she achieved that is told in flashbacks (highly recommended, though I didn't finish it yet)
Agri based on the true story of a beautician/hairdresser/70-year-businesswoman
Gold leaf 1949 onwards (in an era without business women) FL leads crumbling tea factory to the world