Ebay enforces these policies this way because they WANT all of the smaller sellers gone. They WANT you to get fed up and leave. They have publicly stated so, I have the article if you want to read it.
They do not WANT to waste the time on those disputes and they feel like if you are small enough to be pushed out by this, then you aren't profitable enough to keep in the first place. They also figure that if a seller is big enough to withstand these policies that they will stay, because of traffic. Because... lets face it. Every seller in the market knows that ebay has the best traffic flow of just about any eCommerce site on the net. We know it, and ebay knows it too.
They are currently working towards making ebay an "Amazon" like entity, where every listing is the same, and sellers have no say. They also started the new ebay boxes, which will eventually become mandatory for all sales.... They will even check up with your buyers to make sure that you are using their packaging... This is simply an example of the lengths they are willing to go to create such an atmosphere. They want to be Wal-Mart... not the mom and pops grocery store. Because that is where the money is, and that is the only thing they are interested in.