All of the following are disadvantages of cost leadership except $\_\_\_\_\_\_\_\_\_\_.$

If perceptions of quality become too low, businesses will suffer.

Larger volumes of sales are a must because margins are slim.

The need to keep expenses low might lead cost leaders to be late in detecting key environment trends.

Low$-$cost firms$$ emphasis on efficiency makes it difficult for them to change quickly if needed.

High profits can be enjoyed if a cost leader has a high market share.