If you are legally required to buy a license then most (sane) businesses will pay for the software if they want to use it, whether it has DRM or not, to avoid l

If you are legally required to buy a license then most (sane) businesses will pay for the software if they want to use it, whether it has DRM or not, to avoid legal liability. So DRM free success is not evidence of any kind that freeing the software from legal copying restrictions would be successful at all.