So Ubuntu got volume, are they making any money? Nobody can tell, since they're a black box private company but Red Hat got 7300 employees, $1.5 billion in revenue and turned a $178 million profit last year so they're making money. That's why Red Hat dropped RHL, it was a money sink with no end and no signs of improvement. Who cares if Ubuntu got 100000 installations making $0? I'd probably use Ubuntu over CentOS for an unsupported server too, but if I wanted support I'd probably go Red Hat. Without knowing how many of the Ubuntu servers have a support contract it's not an apples-to-apples comparison. Unless you think profit is decided by popular vote.