a pipeline company called enterprise, the wall street firm, kohlberg, kravitz, and roberts, and the accounting firm pricewaterhousecoopers. the koch brothers own website lists partnership after partnership after partnership that make up a small business empire of 70,000 employees. according to the "washington post," more than 1 million people who reported at least $200,000 in income in 2008 were partnerships and "s" corps. the richer you are, the more likely you are to call yourself a small business that way. 89% of americans who make more than $10 million a year filed as a partnership or an "s" corp. in 2008, more than 500,000 of these supposed small businesses had more than $1 million in assets. in 2005, almost 20,000 of them had annual receipts of more than $50 million. but if you want to know which companies these are, you are out of luck. because individual tax filings are not public record. still, some have revealed themselves. the "s" corp. association lobbying group is chaired by an executive of the hillman company, a small business founded by a billionaire. the "s" corp. group preside