What percent could, even if they wanted to pay, watch the movie legitimately in their country?
Does it matter if you watch a cam if you're not even able to pay for the movie?
The thing about movies is that they're also part of societal culture - in The West at least.
In my personal opinion copyright is all kinds of messed up, and limiting the length of copyright terms (to say 7 years from public release) first would somewhat legitimise such harsh actions.