How much would it cost to buy Call of Duty and Battlefield?

It's not like Minecraft had a set price, Microsoft thought that 2.5 billion was a reasonable price for a revolutionary game. And they didn't buy Minecraft, they bought Mojang, the company that made Minecraft which would cost even more. I don't know how much it'd cost, but it'd be more than 2.5 billion most likely.

Call of Duty should be in the billions just to buy the Franchise and i don't know about battlefield

Okay, correction, Microsoft bought Mojang, which was the developer and the publisher, if they wanted to Buy call of duty, they would probably have to buy Activision, but it would cost a few billion dollars, potentially more than Mojang