Er, in a new war, i.e. modern day symmetrical warfare, the MBT does rule the battlefield. Today, infantry is a situational niche unit that's approximately worthless in open terrain.
Give me a platoon of infantry, some mines and some shovels and I promise you your nice $6 million tank won't go anywhere.
Give me some ATGM like javelin, spike or milan and you won't even take your tanks home.
Tanks are at the end of their lifetime, defense systems like Trophy are all nice and shit but in their current form they are useless against any modern force.
The Trophy system is already obselete with the design of the RPG-30.
The use of top attack munitions, DPICM artillery rounds and the ability of infantry to carry several ATGMs, SLAM like weapons and practicly being imune to tank fire if they are dug in make them (the infantry) real tank killers. Weapons like SPIKE are even able to engage vehicles that took safety behind a hill for example.
Cost of a Javelin is 80.000, cost of an M1 Abrams is 6.200.000.
That means you can buy almost 80 Javelins for the price of 1 Abrams. Unless those fancy tanks suddenly are able to fight of 80 missiles, the infantry is still ruling the battlefield,
no matter where you fight.
You and your friends see a tank, tank sees you. You fire a rocket. Tank's automatic defense system shoots rocket down. Tank readies big guns and tells on you to F-16 at 50 000 feet. F-16 very angry. Now what?
Heck, even kids know about these things now that it's been featured in COD...
You replied while I was typing this post.
Please read my post before you make posts that make you look stupid, I fired plenty of MILAN rockets during my active service and even those old missiles make a tank look like a matchbox.
As opposed to your idea Trophy like systems are not 100% accurate and they are worthless against super-sonic missiles because they simply don't get a lock. To prevent you from making stupid posts again, supersonic missiles are common (9M123 Khrizantema and 9K121 Vihkr on Russian side and I believe the TOW missile is supersonic aswell).
I believe the maximum range of the M1 is 4.000 yards with the use of rocket assisted munitions. Optimum range is around 2.500 yards.
this means that the tank is usually outranged by modern ATGM's. Even in desert terrain you will rarely be able to use your tank at that range while most ATGM's are able to just toss a missile into an area and select a target when spotted.
Infantry can survive on it's own, tanks... not so much.
edit: Friendly advice don't use your extensive use of CoD as an argument, because in case you didn't know people don't have a healthbar that regens and shit (and neither do tanks BTW).
edit 2: Heck even kids should know that calling in CAS (or arty) is not as easy as "drop bomb here"
http://www.krauselabs.net/dump/CASQuickReferenceSheet.pdf
This is how you call in CAS. So it is not a case of "hello this is tank, I need help, please drop bomb here F-16".
I guess that is not featured in CoD...