The artist Damien Hirst does not make any of his own work, he has a team that do all that for him. Nonetheless, everything out his studio is 'by Damien Hirst' as in the artist, not one of his 'artworker' collaborators or business managers.

I wonder if one could work as a scientist or an inventor like that? Which inventors, e.g.Edison, actually did?

The art movement of the 'Blair era' could be described with only the names of half a dozen Hirst type artists mentioned, yet all those names have teams of helpers. Maybe the invention scene a hundred years ago was like that to a certain extent?