Perspective is important. Cisco costs approx 5-7x what UI does. And then there are annual support contracts on top of that. For mission critical systems it's totally worth it. I used Cisco for years and miss how bullet-proof it was, but it's not worth the extra $50k it would cost for our home.
A good example are some stadiums that use Cisco for security and teams but UI (or other affordable alternatives) for patron WiFi, retail systems, press, back office, etc.