Most commenters seem not to have read the actual case. This is not about Steam "preventing abuse".

The case here is purely about Steam MISLEADING buyers about what their rights are. The law is very specific here. For example, if you buy a game off Steam that says it's compatible with Mac, but turns out not to be, you are entitled to a refund. This case is about the fact that Steam's policies misleading people by saying there are no refunds even though consumer protection law in Australia states so.

This is a warning to companies who sell software- don't tell people they don't have rights and protections when they actually do.