Difficult to implement properly. You can set code to say "ball touches hand = foul", but that's not the full rules of the game. On YouTube, watch a Mark Goldbridge penalty compilation (on Fifa) and see how many given for handball looks dodgy
If they could do it 20 years ago why not now ? We now have better technology and i see no reason why not implement it. It wouldnt be perfect or maybe just a gimmick but id be nice to have "new" feature. Even in real life a handball foul is never 100% correct.
Honestly, they just lazy.






Not to mention that the host makes me cringe so hard... those athletes wearing official kits and boots during some 10min. videogame? Feels like dating with my mates to do some Tekken championship, and all of us wearing our official WTF doboks while pressing some buttons in the front of the TV without moving our arsses... 
Absolutely brilliant! 