Regulation has to increase some expenses. If nothing else it's one more thing on the todo list and time has a cost too.
Note: I'm not saying anything about cost/benefit. It could definitely be true that the benefits are well worth the cost. And it could also be true that a benefit is a lowering of an expense somewhere else lowering overall prices. (which is the thing that is not obvious and need to be explained) But there is a cost that needs to be covered by something. And that cost is usually going to result in increased prices in one form or another.
Note: I'm not saying anything about cost/benefit. It could definitely be true that the benefits are well worth the cost. And it could also be true that a benefit is a lowering of an expense somewhere else lowering overall prices. (which is the thing that is not obvious and need to be explained) But there is a cost that needs to be covered by something. And that cost is usually going to result in increased prices in one form or another.