How do you know how much an OEM pays MS per machine it ships? It's a closely-guarded secret, which is why when MS panicked and started foisting Windows XP on netbooks to nip the consumer Linux PC in the bud, you could never get the same spec machine with Linux as with Windows, so it was impossible to work out how much the Windows licence actually cost - positive, zero or negative!
Why is it such a secret? Could it be that if indeed it does turn out to cost the hardware manufacturer peanuts compared with a standalone copy, the OEM bundling would be viewed as an anti-competitive subsidy to hinder the adoption of alternative operating systems and applications which run on them (or MS's applications which don't - for no technical reason)? Perish the thought!
Because it is a secret, the court can only award the known price of the software, which is that of a stand-alone licence. I think we agree that this is likely to be far higher than the price paid by the OEM, so that secrecy backfires in a particularly satisfying manner! If this becomes a trend, MS will soon change the way it does things.
Microsoft was the company that institutionalised this anti-competitive behaviour - nay stranglehold - and has benefited from it since the 1980s, so the fact that you think it's "unfair" to penalise the company for it strikes me as quite bizarre.