Well, two tricks. The other one is massive lawsuit against YouTube for no longer "doing enough" to prevent copyright infringement. Viacom v. YouTube started in

Well, two tricks. The other one is massive lawsuit against YouTube for no longer "doing enough" to prevent copyright infringement. Viacom v. YouTube started in 2007, was reversed several times, and really only ended because they settled, the settlement being secret but I'd guess probably directly lead to ContentID. https://en.wikipedia.org/wiki/Viacom_International_Inc._v._YouTube,_Inc https://en.wikipedia.org/wiki/Viacom_International_Inc._v._Y....