Lookup what "hidden champion" actually means, such companies are highly competitive and successful in the global market with extremely specialized high-tech products in a small niche. Because they have specialized in high-quality niche-products they can focus their marketing money where it matters: their potential customers. And those customers are other companies, not people like you or me. Those companies are also often family-owned and not publicly traded. What's the point of maintaining a big PR circus for this type of company?