Because they do not want you to submit their proprietary tech as an open standard. In the extreme, think about submitting .NET to ECMA. Something lighter might

Because they do not want you to submit their proprietary tech as an open standard. In the extreme, think about submitting .NET to ECMA. Something lighter might be a proprietary image format or interchange method. Engineers may find this useful. It may be at the request of a significant customer. It may even be in the best interest of the company. It does not mean senior management will agree though.