Running a company is pretty much a public activity. Why protect the privacy of the rich and powerful (relatively to those who don't run any companies) few while compromising anti-corruption measures.
Disclosing their personal information seems like an incredibly poorly targeted policy, motivated by little more than the misconception that you’re hurting the “rich and powerful”, when you’re just hurting the middle class and adding yet another barrier to people trying to start businesses (already stupidly difficult in most of Europe).