With companies underpinning more and more online functionality into the games I really worry about even the reliability of the "warez" backup method.
That's true I guess but I generally don't care about online functionality. Take Max Payne 3 for example - a warez copy will only have the singleplayer without the pointless multiplayer and the worse-than-useless Rockstar Social Club. That's an improvement in my book. For games like Left 4 Dead 2, yeah, it's an issue, but those types of games make up less than 1% of my Steam library.
“The greatness of a nation and its moral progress can be judged by the way its animals are treated.” - Mahatma Gandhi