PowerBI wants to be Tableau based on the number of times Microsoft sales has demoed and whatnot.
But I haven’t met databiz people who switched from tableau to PBI. I’m not sure why as they look pretty similar on paper.
I think Tableau’s mental model is about exporting and storytelling while PBI is about reporting.
Personally, I find it harder to work with PBI because it’s the only license model more confusing that Tableau. And there’s no Tableau Public equivalent.