https://wccftech.com/ubisoft-the-division-2-epic-games-store/

During yesterday’s post-earnings (Q3 2018-2019) conference call, Ubisoft CEO Yves Guillemot provided an explanation for the recent decision to only deliver Tom Clancy’s The Division 2 via UPlay and the Epic Games Store on PC, leaving Steam out of the picture.

According to Guillemot, it was actually done mainly to increase exposure to UPlay.