As one comment under said, it's a small Norwegian family company (5 employees) that's been around since at least 1998. And they've always focused on what they do.

From open Norwegian business data (https://www.proff.no/selskap/refsnes-data-as/sandnes/it-kons...), it seems like they have a yearly revenue around $4.5M USD. From the annual salary expenses, those five employees either make bank - or they hire a lot of consultants from overseas.

So I guess it's a good example of first-mover advantage.