A very good article as it makes you look at it from both sides, and see it is not just the studios fault, it is also bad business practices within FX houses, and how both sides need to sit down and talk this out. And also interesting that Studios will often pay a change if they make a big enough change and it is in the contract.
I still think that Studios need to slow down on their insane schedules so that things can be done in a more reasonable time. A more normal schedule would make the whole thing more pleasant and lead to better FX in the end.