A competitive advantage based on inimitability can be sustained for at least some time, if it has the following characteristics:

rarity, path dependency, causal ambiguity, and social substitutability.

geographic uniqueness, cause dependency, social ambiguity, and path complexity.

$$ psychographic uniqueness, path dependency, c$$usal ambiguity, and substitutability.

$$ physical uniqueness, path dependency, causal ambiguity, and social complexity.