Amazon wants my help now?

Today, I received a very interesting email from Amazon:

Dear KDP Author,

Just ahead of World War II, there was a radical invention that shook the foundations of book publishing. It was the paperback book. This was a time when movie tickets cost 10 or 20 cents, and books cost $2.50. The new paperback cost 25 cents – it was ten times cheaper. Readers loved the paperback and millions of copies were sold in just the first year.

With it being so inexpensive and with so many more people able to afford...