My point is simple, the comment about people on welfare is insulting. If your point about 'rich people' is true, then that's insulting to 'rich people'. There is something undesirable about comments which refer to people's social status as if one person is better than the other due to the things they own.
I am neither rich nor poor. However I have had several macs over the years, and they are getting considerably worse in build quality and value for money. Aftersales is definitely worse, and don't mention the self-appointed 'geniuses' either. I don't agree that making your computers accessible in terms of cost is an entirely bad thing - look at the success of the eeepc.
The comment about low income people not buying software is laughable. Most people of a range of incomes freely share and download software they do not pay for. That is due to it's availability. I am very sure they all paid for their computers though.
They're not all that different it build quality, but the designs are becoming smaller and more experimental. The closer you get to the edge of the operating envelope, the more likely something is going to fail.