They certainly were, because no one other than a few hardlines were writing Java or C# and VB code in bare bones editors and compiling from command line, as only the bare bones SDKs were free beer, and for the desktop.
IDEs, implementations for embedded and phones, were all paid products, IDEs by developers or their employers, the others by OEMs.
My point is the early days, JCafe, Visual Age, Visual Studio, Forte, before free beer IDEs for them became common.
Java side with Eclipse/Netbeans, .NET side with the Visual Studio Express editions.