I agree with your sentiment Grumbledook but I disagree with your understanding of the word Theft.
By your own statement, does that mean I can take your car for 9 weeks, without your permission, as long as I leave a note to say I will return it?
Theft is taking something without permission, no matter who or what it's taken from.
However, I agree that stealing software is a grey area. How can something be stolen that is virtual. It has no physical existance.