English to Italian Bus/Financial Accounting US companies

The vast majority of personally-managed businesses are single service, cash and carry, general retail or whosale enterprises. A significant minority also includes various types of professional operations, such as legal, medical, etc. As business activities, nearly all are relatively simple.

Dovrebbe essere facile e intuitivo trovare il corrispondente in italiano: si parla di società a gestione personale quindi.. ditta individuale...? Confermate o avete altre idee?