There is a small case to be made in hedging against storefront shutdowns by getting free copies as much as possible on as many storefronts as possible. UPlay being the publisher's own storefront presumably has a different risk assessment for shutdown than GOG or Steam. (By that logic, I love GOG Connect for a small hedge of Steam purchases, and many of my Steam purchases in the last five or six years have been Humble Bundle or Humble Store for a similar reason.)