What’s the most important in the Product Owner role?

Based on my experience working in Agile environments since 2010, I did some research and general observations on the topic. Regardless of the business domains or product area, there are some common rules that may devastate your efforts towards Agility.

A significantly increasing number of companies strive for Agility. They intend to progress with Agile Transformation.
Based on my research from several dozen organizations, what might prevent them from benefiting from the Scrum (or just an Agile mindset) is lack of Transparency. In these circumstances, any change seems to be impossible to proceed.

Product development in a complex environment always poses some risks due to their unpredictable, uncertain nature. There are numerous types of uncertainties like business, market, technology, architecture, integration, currency, financial, marketing and hundreds more.
Facing a large number of risks while delivering products seems to be a standard. And it is. It is common and natural. All we need to do is to manage risk.