Things like this really depend on if the Switch 1 will have a normal Nintendo lifecycle (5.5-6.5 years before being replaced) or if the Pro model will extend its lifecycle and for how long. Once Switch 2 is out, unless Nintendo makes all Switch 1 games also available on there day 1, then I would imagine these games will start tanking in sales as people will start ignoring the OG Switch. And that sales dip happening is dependent on when Nintendo replaces the hardware with the next true gen experience.