It is definitely a business problem. I deal with similar sorts of contract work and we always put in clauses about rework and going over time and I’ve got strict restrictions on what work I’m supposed to do. (Actually dealing with this now, honestly. Customer wants extra work done and I need to get approval for it.)

The problem is the VFX firms are at a disadvantage when dealing with studios. The studios have the work and all the lawyers, so they have the power in negotiations. If they studio says do more work and the VFX firm doesn’t they’ll get blackballed and go out of business.