pfSense is also an enterprise-capable firewall. I don't think you'd want to bet your real business on a Linksys or Asus from Walmart. Looking at it this way, you are getting enterprise-level performance and security for your home net at no required expense except what it takes to learn to manage it. Of course, being open source, you can always get creative and roll your own: https://github.com/pfsense/

Well it is up to the ISP device to provide reasonable support for a customer-owned firewall device while still providing the necessary IPTV, etc functionality.