I'm not talking specifically on the dynamic linking issue. My point is that the GPL cannot force you to publish your source code, but if you break the terms you

I'm not talking specifically on the dynamic linking issue. My point is that the GPL cannot force you to publish your source code, but if you break the terms you can lose the license to distribute GPL code that isn't yours. As regards your example, I don't think the GPLv3 permits that, so if a company tries to circumvent the GPL using that approach, it would probably lose the rights to distribute the GPL software application.