Nordic authors whose works enter public domain in 2018

Not only has language changed a bit. Many of the issues that authors dealt with 100 years ago are also different today. I didn't see a single Danish author among them whose works are still well known or widely read. I don't think you can enter a typical Danish bookstore and buy the works of any of these authors.

Perhaps 70 years after the death of the author is too long. Maybe 20 years after publishing the work would be better. After all that should give the publisher and the author plenty of time to make money, if possible. Then there could be 5 or 10 year extensions if the publisher could show a certain amount of marketing cost.