From Chapter $4,$ the risks of a "focus" strategy include which of the following?

a competitor's ability to use its competencies to "out$-$focus" $($i$.$e$.,$ be better at meeting the needs of the niche customer$)$ than you are

a competitor's ability to use its competencies to sell counterfeit products to a broadly defined customer segment.

decisions by industry$-$wide competitors to use their resources to serve a wider range of customers' needs than the focuser ha been serving.

decisions by low cost provider to use their resources to serve a wider range of customers' needs.

All of the above are correct