It's the nature of licensing models--contract law is all nitpicking and semantics, as I've already stated. In the practice of law as it pertains to these agreements, there are exactly two types of licenses: standalone and stacked. All OS X licenses are stacked because they all presuppose a suitable Mac OS license with the hardware--again, the sole difference between a standalone ("full retail") license and a stacked ("upgrade") license is that a standalone license works without the contractual presupposition of a prior version or license (regardless of any checks performed by the software installer itself).I think you are nit-picking here. I would argue the opposite, that Apple only sells full licenses and not upgrades.
Disc != license.If you have ever tried to use these disks to install OS X on a different machine, they won't let you because they are tied to the specific system sold.
"Full install" and "full license" are not the same thing. You can perform a full install using an upgrade license as well--it's not supportive of your argument.The disks are by definition full install disks because they contain a complete set of specialized drivers and optimized code for whatever Apple hardware you choose to load it on.
Apple doesn't sell any bare systems. You can't make a bare Mac--you can only make a blank Mac. These are terms with conventions on acceptance--"bare" means explicitly metal only for hardware and a zero-state assumption for software; "blank" just means an empty hard drive. The method of installation is again irrelevant to the cause. It's clear from your lack of understanding of the working legal definition of these terms that you're not versed in this particular area of expertise, and perhaps instead of arguing, questions might be a more suitable approach.It doesn't require a previous version of OS X at all. You can perform a full install from any bare system that Apple sales. That by even your definition is a full license.
You are conflating permitted operations with the nature of the license, which is a common lay mistake.