<p>When discs started to take off properly in MTB, pretty much every manufacturer made bikes/frames that were &#8220;disc ready&#8221;, some going further and speccing bikes with disc hubs, but Vs handling the stoppiness. </p> <p>This seemed at the time to be a very good idea. Future proofing, and allowing the buyer to gradually upgrade. Maybe an end at a time, for example. </p> <p>Why doesn&#8217;t this seem to be happening at all in the road world? OK, so brake/frame design might preclude it in some cases, and perhaps it&#8217;s a weight thing, but surely it makes sense for many/most bikes?</p>