Novell and Red Hat both are real world corporations, and Ubuntu + others are on their way to joining them. Claiming that linux cannot survive as a business is quite frankly foolish. It exists and thrives in a capitalistic market, and with all due respect, it most certainly can make enough money to survive as a business. Note my comment was not specifying the linux kernel in itself, but rather the larger scope of the OSS and GNU/Linux projects. I welcome any counter-arguments.