Just a few reasons:
- Many people use NethServer just as firewall
- They prefer the simple NethServer UI than a complex one
- They don’t want to learn another administrative console and standardize their installations
- We have already a business-only-firewall-solution with thousands of installations: Firewall aziendale | NethSecurity di Nethesis
That’s the right question, please pfsense experts comment here with your thoughts 