Complex sentence: Dominick's lost market share and profits following the Safeway takeover.Safe tried to imitate the model that had given success in California, but Chicago being very ethnic centered did not like the shopping experience.
Split into simpler sentences: Dominick's lost market share and profits following the Safeway takeover. Safeway tried to imitate the model that had been successful in California, but Chicago's strong ethnic background did not mesh well with the California shopping experience.