Investors should always keep the cyclicality of Dollar General's industry in mind.Dollar General (DG -3.20%) is facing a scenario that once seemed unlikely: poor performance. Its business model looks like one that could attract consumers in recessionary times and bargain hunters in improved economic conditions.However, the stock has suffered as its core consumers, lower-income customers in rural areas, have less money to spend because of inflation. Consequently, the stock's current price has fallen back to ...