Probably there are plenty of regulations related to safety and suitability regarding electricity, water, washing residue on dishes, etc.
Without being more specific, the only thing I can presume is that you were unwilling to follow regulations here.
I furnished and equipped my home a couple of years ago, and I had plenty of options for dishwashers, from multiple brands. Many different models at varied price points.
This tells me that serious companies have little problems to follow regulations to compete here.
Yes, the EU is not a country. Each country has their own government, with regulations of their own.
I am in favor of some sort lf EU federalization for this reason, there's a lot of redundancy.
On the other hand, you could just choose a country to operate, which is a normal thing to do. There are things I could find, for example, in France that I cannot find in the country where I live
Hope you don't accidentally fall off a historical ledge that can't get a handrail.