Note that the red area on the map in the article is Härjedalen, which has an area of 11,405 km^2, 1.1M hectares, 2.8M acres.
The purchased forest (15k hectares, 37k acres) is therefore ~1.3% of the region.
https://en.wikipedia.org/wiki/H%C3%A4rjedalen
That's ... huge.
That's ... huge.