[hutzlibu]

"And in what sense did this retroactive copyright extension serve to promote the progress of science and useful arts? "

Well it brought money to disney and they did produce art (...at least sometimes, the last Star Wars was not soo bad)

So if they would no have revoked it, all this money would have instead been spend on drugs or worse, instead of cementing the monopoly of our lovely family entertainment company.

[pbhjpbhj]

/s

Presumably.

Like, without the land grab keeping works from the public for 20 years longer does anyone suppose Disney would have done anything different?

It certainly didn't alter the behaviour of the long dead content creators.