Liability and Support.
In very many cases these 'I don't care' type of shrink wrapped liscences are not only due to the amount of resources it requires to support a sigificant user base but as well customers love to blame vendors for their problems and will sue at the drop of a hat. I really don't blame companies for throwing out these life-rafts for themselves.
Where life and death is at stake hardware and software vendors will provide support and guarantees for their products. This is especially apparent in the medical imaging and aerospace fields.
In the gaming console market finding serious bugs is rare and even though there is no software 'warrenty' you would be hard pressed to find fatal errors in the software. Due to the single configuration factor with little to no depdant user serviceable parts console programmers don't have to write software which supports every piece of hardware under the sun (which is where most bugs come from IMHO).
Of course this is all IMHO.
How does this work?
How does your bios determine which image to boot from?
Very interesting but considering there is very little documentation (went to site, viewed man pages) it doesn't seem all that usefull....yet.