Mac might be slowly gaining on Windows but it's a very slow growth.
That San Franciscans use more Macs should be a surprise to no one. Their salaries are a lot higher than people on the east coast (a few choice cities excluded). Of course their living expenses are a lot higher too; but computers cost the same no matter where you live. $1200 to a San Franciscan is a different type of purchasing decision than to someone from, say Ohio. In San Francisco $1200 is a month's rent on a studio apartment. In many parts of the east coast that's a pretty luxurious 3 bedroom condo.
At the risk of getting seriously offtopic, my map shows bits of Ohio being closer to the Atlantic than parts of Oregon and Washington are to the Pacific, so perhaps we should say "Ohio is the East Coast only if Spokane is the West Coast".
And this is what I was referencing actually. I should have included the link, but I thought it was common knowledge that Ohio was the furthest east state that is a part of the Midwest.
That San Franciscans use more Macs should be a surprise to no one. Their salaries are a lot higher than people on the east coast (a few choice cities excluded). Of course their living expenses are a lot higher too; but computers cost the same no matter where you live. $1200 to a San Franciscan is a different type of purchasing decision than to someone from, say Ohio. In San Francisco $1200 is a month's rent on a studio apartment. In many parts of the east coast that's a pretty luxurious 3 bedroom condo.