This is a horrible decision by Quest. SSMS provides robust functionality that not all users need. Toad for SQL Server is somewhat more user friendly but a vast majority of your freeware users do not need the extra functionality that exists in the full product. The powers that be should recognize that the users that do not need the full product cannot typically justify the cost of the full scale product. Quest has killed a user base that would eventually benefit from the more full product.
I have been using Toad for over 20 years. I started with Oracle and a paid version. Now I'm on SQL Server and have been very disappointed that the UI for SQL server is horrid compared to Oracle. The Toad Sql Server UI is no better than the free SMSS which is why I cannot justify the cost, especially when there are no perpetual license options.
With this decision to retroactively kill a large user base, Quest Software will be removed from my list of viable options. Your competitors should be thanking you.