Maybe like Valve / Steam they do it because they can... until someone with a lawyer drags them through court and they're held accountable for building theft and fraud into their business model.

http://www.pcmag.com/news/350574/valve-fined-3m-in-australia...

Before it even went to trial they globally overhauled their refund system, presumably after realizing EU, USA, CA etc also have consumer protection laws designed to protect consumers from companies that are committing fraud.