"Compensation"?
Just wondering - how many of those musicians volunteered to pay extra money to the treasury, when the law was changed so that they could continue to profit from what they did 50 years ago?
I get the principle: you did the work under a certain set of conditions, and now we're retroactively changing those conditions. But it's not the first time we've done it, and previously - very recently, in fact - you were benefitting from those changes. If you didn't raise the question of "compensation" then, why the hell should we listen to you now?