If we draw a line and say "everything on this side of the line is permitted", of /course/ Nvidia are going to try to sell the most expensive things that can be

If we draw a line and say "everything on this side of the line is permitted", of /course/ Nvidia are going to try to sell the most expensive things that can be sold from the permitted side of the line. They have a duty to, within the bounds of the law, maximise shareholder profits. That's how capitalism works - it's how we've built basically all of western society. Everything on the permissible side of the line we draw will be done. This is the entire purpose of having a line separating options into permissible and forbidden. So we shouldn't cross our fingers and lie about where we want the line to be drawn; we should make sure we draw the line where we actually want it to be. If we don't want Nvidia selling anything at all in China, we need to say so already, rather than just shouting at them for doing things we said they were allowed to do.