Steam streaming games is seen, by many content creators, as a way to fight piracy.

Streaming (as a means of protection) is as useless as DRM except they're too stupid to not do that dance for their legal departments. It hurts legal consumers and doesn't punish non-legit consumers. It prevents you from using content you've paid for & used previously when your internet goes down. Not to mention the enormous waste of electricity/bandwidth/environment/people's lifespan. It costs us all.