That's because the facts have shown us that when it's about IP, it doesn't matter whether you're right or wrong:

- either you have no money at all, and you'll probably get a pass

- or you have some money, and you'll get sued until all that money goes into the rights-holders' pockets or your lawyers' pockets, whichever comes first

- or you have a fricking huge amount of money, so much that you can withstand any amount of trial thrown at you and probably come out victorious in the long run

It's an attrition fight, and Google is the clear dominant fighter in the arena