Delphi (Borland Developer Studio) is a great product and there's a lot of one-man, two-man, or three-man shows out there running great and successful businesses just because they're using Delphi.
For these entrepreneurs... look what I found today!
Guy Kawasaki has a blog! Those of you wondering who Guy Kawasaki is, just click on his name. There's a brief history of him there.
In 2017, with the release of Delphi 10.2 Tokyo, Embarcadero introduced a specialized implementation of the Observer pattern into the System.Classes unit. While it has been in the wild for 9 years, it remains a "hidden" architecture for many, primarily because it serves as the invisible engine behind LiveBindings. Other than live bindings, you can also use the Observer pattern as a way to update component settings to the Windows registry, an .ini file, or persist it elsewhere.
System.Classes