So you think it's good that Apple release what would considered to be a service pack in the MS eco system and charge for it? That's amazing customer service i'd best buy a Mac!
Yet with MS; 6 years later an OS which appears to be almost the same apart from a crap interface and stupid pointless features and really doesn't give anything new to your normal user. Wow that's amazing customer service, I better go out and buy Vista Ultimate Edition!!1111.
Disclaimer: Vista's technical improvements (kernel etc) certainly are a good thing though, but generally the average user won't notice these.