Actually, I would think to compare these with 'traditional' businesses:
executive committee => bitshares committe members
accounting => witnesses
Employees and projects => budget items and workers
Shareholders => shareholders
supervisory committee => non existing because protocol can't cheat
products => bitassets, uia, dex, bond market ....
profits from product (service fees)
costs to profit shareholders and workers aswell as accounting
While Muse and IdentaBit are going to be separated companies, we may add other 'products' to increase reach