Does a competitive advantage lead to abnormal profit? Given that organisational capital is specific and difficult to replicate it is considered a competitive advantage (see e.g. here)
According to Wang (2014)

competitive advantage is obtained when an organisation develops or acquires a set of
attributes (or executes actions) that allow it to outperform its
competitors.

Does a competitive advantage allow a firm to achieve abnormal profit?
Or which other advantage would it confer?
I would say yes. For example, consider a perfect competition scenario, with equilibrium price $p$.
Now say (only) one firm acquires some organizational capital that allows them to have lower their marginal cost from $c(=p)$ to $\tilde c &lt; c$.
This firm can charge price $p^-$ and aquire the whole market now, earning abnormal profits $\pi = (p^- - \tilde c)q$.