If a useful resource is superior on Value and Rareness, then it only provides short term aggressive gain. If a source is just useful, then it’s a competitive parity. If it’s none, then it can be regarded as a competitive downside. Value Chain Analysis of Frasier A Note :- https://hbr-case-study-analysis02003.ampblogs.com/the-smart-trick-of-online-case-solution-that-no-one-is-discussing-71406912