Quote - So given the limitations of  MAC, why do so many people switch to them?

That's part of the problem right there. Many of the limitations are perceived limitations, not actual ones. I see quite a few things posted here on Renderosity that say "PC only" that I know will work fine on my Mac. It's reasonable for you to see those and assume that the creator knew what they were talking about when they said it wouldn't work, but oftentimes they're just saying "PC only" because they don't know and don't have the ability/concern to find out.

In some other cases the limitations are real, but IMO caused by a myopic view toward the market. I bought --or tried to buy-- a digital photo frame as a gift last year, but had to return it because the onboard software couldn't handle images processed by those little-known image-editing programs called Photoshop and iPhoto. In that case, the manufacturer made the mistake of confusing a small percentage of market penetration with small actual numbers, when they should be recognizing that there are still millions of Mac users. It makes some sense, if you're a software designer working in your basement with limited resources, to concentrate on the bigger market, but by my informal calculations (I did some real math, but won't waste your time with it here) that photo frame designer was thumbing its nose at a hundred milliondollars of potential annual sales because they didn't want to spend relatively few man-hours on making it work with a market that, while certainly smaller, has already demonstrated its willingness to spend money on cool gadgets.