People certainly did use it and are now suffering the consequences. The admin GUI for one popular CRM system is written in Silverlight – a natural choice since

People certainly did use it and are now suffering the consequences. The admin GUI for one popular CRM system is written in Silverlight – a natural choice since the rest of the system uses Win32, COM, .NET and pretty much every Microsoft technology you can think of from the past 25 years. Their new from-scratch rewrite is based on Python and web standards.