User blog comment:Crazy sam10/Infinity Ward explains leaving Modern Warfare series/@comment-72.215.136.90-20130531235511/@comment-1187559-20130605090734

This is what I don't understand. The main comment underneath me is someone complaining about there being a 4th MW or Black Ops, yet everyone is fine with an 8th WW2 game (16th if you count the spin-offs). WW2 has been done to death, and that's by the entire industry, not just IW/Treyarch. The games industry normally chooses to stick to the trends instead of doing something new in fear that it won't sell. Which is why Treyacrh stuck to WW2 while IW made Modern Warfare.