Texas will do whatever it takes to keep him in Austin. They have more than enough resources to do so, both the money and the infrastructure that's needed to win championships. It would be very difficult to poach a coach that Texas wants to keep.
I would never say ND shouldn't make overtures to any excellent coach; but like Notre Dame, Texas is a place that should be a destination job for a successful coach. Unlike Notre Dame, Texas is not self-conscious about its desire for winning athletics which is a point in its favor.