Maybe because they are trying to compete in not so upper hi-end but middle class hifi and you already have in US many good speaker manufacurers at same price/quality range ,so competing would need something truly special products and aggressive campaigns and reviews to get them more popular. That marketing plus all else just costs more than small Finnish companies can afford. Just my thinking…
We have many very good speaker manufacturers here in Finland,to name a few others too…
Genelec https://www.genelec.com/
Taipuu Speakers https://taipuuspeakers.fi/en/taipuu-speakers-dsp-active-speakers/
Gradient https://www.gradient.fi/en/
Penaudio https://www.penaudio.fi/3-products
Genelec´s are the most succesful and widely known brand for studio monitors as in home use,others are more hi-fi speakers with totally different looks and sound characters.
I could happily live with any of those ,but instead I went shopping to US for speakers,and found Tekton Design 
Grass is always greener on the other side…
You should hear Krypton´s some day if you like Amphion …they are pretty awesome.