Being able to play the game on a budget is a (valid) argument against video replay, but it still doesn't explain why refs don't have to specify what rule is being violated by whom. The ref is under no obligation to explain what he thought he saw, even after the match, and that's something that doesn't take expensive equipment. If it turns out the ref was wrong on instant-replay in hindsight, that's one thing, but the complete lack of transparency and accountability is aggravating. I'm still not entirely sure what the call in question actually was, other than one that would disallow a goal.
FIFA is a political entity, and it acts in its own interests, not those of the teams, the fans, or even the sport. My British co-worker told me that he thinks FIFA keeps the refs unaccountable because getting people riled up over bullshit calls makes them more emotionally engaged with the sport.