I think Apple did great with the RMBP. Sure its not upgradable, but lets face it fellas....this is the future of mobile computers. Did people bitch about the iPad and compare it to PCs/Laptops/Netbooks? Yep, some did...but look what happened....the Netbook disappeared. And everyone followed...
This is not the future of mobile computers. It's probably the future for mobile computers for Apple unfortunately. Have you looked at their market share lately? I am sure that Lenovo, HP, ASUS, and yes Dell will fill the void.
Windows 7 is a great OS. Not sure about 8, but 7 is great and if I have to purchase a machine elsewhere for my job, that is what I will do.
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If you can't afford a BMW over the long haul, consider the Volkswagon [sic]. Both do the same job, but with different consumer expectation.
More like a BMW with a sealed hood, or a Volkswagen that is serviceable.