If you run something with raytracing on a machine that doesn’t have support for it, it just won’t do any raytracing
So that’s one thing to consider in terms of how much is it worth to do any raytracing if your customer won’t likely be able to use it. In games right now, the ones that support raytracing have it as a graphics option that switches from using things like screen space reflections to raytracing so you can also do something like that where you have options to change graphics settings.