imendezr Plutonium is not a cracking group so "prices are high" isn't an argument to make them work on a game for several months especially to get it shut down within a few months after release.
A client is not a way to play the game for free. Plutonium just did it but it could be removed at any time since it's not what a client is for at all. For example SM2 requires people to buy MW2 because their goal, just like most of the clients is not to provide free games. Months/years of work have been put into this and considering this a "free crack" is almost an insult to everything that has been done..
Just search for "BO3" and you'll see hundreds of answers even some recent and I'm pretty sure the staff didn't change their mind within 3 days.
https://forum.plutonium.pw/search?term=BO3&in=titlesposts