Make the REPL ergonomic enough and it will crush any notebook interface. I think that's one reason why R users barely use Jupyter at all - RStudio's REPL is bet

Make the REPL ergonomic enough and it will crush any notebook interface. I think that's one reason why R users barely use Jupyter at all - RStudio's REPL is better than most of the out-of-the-box Python REPLs so R users don't have to resort to Jupyter (and there's rmarkdown for the rare cases when notebooks actually make sense).