The main competitor of Delphi ultimately was Visual Studio, especially VB and later VC#. And it was the mess that Borland (by then bough up, I think) made with

The main competitor of Delphi ultimately was Visual Studio, especially VB and later VC#. And it was the mess that Borland (by then bough up, I think) made with Delphi 8 that was critical in decline of Delphi.