My job involves working with customers to test out products - has for years, and for several jobs. None of my products have ever charged extra for SSO, and most

My job involves working with customers to test out products - has for years, and for several jobs. None of my products have ever charged extra for SSO, and most require it, so I get to deal with it all the time. For the past 5+ years, the part of configuration that takes the longest - by far - is always SSO. I cannot imagine the amount of added support calls, time, and frustration brought about by it, so I can completely understand why some companies gate it behind more expensive tiers.