There's not as much crossover as you might think. In North America the native pollinators are adapted to the native plants and can't even pollinate the introduced eurasian ones. And it goes the other way: honeybees can't pollinate the native plants, only the introduced eurasian ones.

If course, if you're in Europe, honeybees are the native pollinators. At least around the Mediterranean.

So, what you're saying is that honeybees are facilitating the spread of invasive plants in North America? Seems like a definite negative.

We also have many wild bees in Europe.