You still also have the classic problem that higher end bikes lose all the commuter friendly features. Carbon forks and frames often lose mounting points for fenders+rack. The marketing vision of a gravel bike is someone expecting to get muddy and who isn't trying to stuff a laptop into a saddle bag. Durable, maintenance friendly choices like threaded BBs and easy cable routing go away. You're stuck with heavy bikes with poor gear ranges, super low end components, cable brakes, etc.