Just read an interesting point (somewhat related to the topic):
Thom Woods pointed out that guys like Bill Gates and Warren Buffet support an increase in the estate tax. Microsoft is a publicly owned company, so the owner never dies. A law like this can only help Microsoft by hurting family-owned competitors. If your parents pass down to you a business worth $2 million and you gotta pay $500K to Uncle Sam, you can't afford that. You'll have to sell the family business. And surprise! Warren Buffet is such a nice guy, he may be willing to buy that business. That's how he bought Dairy Queen, a local furniture retailer here in Utah, etc.