I agree, however:
> Just how much free software do you depend on? A text-editor? A programming-language runtime and toolchain? A operating system for that to run on? A platform SDK for the developers of that platform? A kernel surely?
there are many people who use closed source editors (sublime/VS), on a nonfree tool chain (VC++) on a nonfree OS (windows) with a closed source SDK And kernel.
What about the servers you deploy to? What about the toolchain used by the upstream platform developers you depend on? What about the software powering their CI-systems?
Whatever free software they depend on, you indirectly depend on too.
Not everyone works on web applications, and I don't claim to have any knowledge of the platform that they develop with.
My point wasn't that I don't depend on free software (I absolutely do, and I do donate to the software I use every year), but that it is possible to be a developer and have very little interaction with free software.
there are many people who use closed source editors (sublime/VS), on a nonfree tool chain (VC++) on a nonfree OS (windows) with a closed source SDK And kernel.