&gt; The fact that Signal exists, and I can use it every day with friends and coworkers, is evidence that we are not locked in.<p>???? This does not even start to make sense to me. The fact you could chat with your friends on ICQ&#x2F;MSN&#x2F;FacebookChat&#x2F;Compuserve&#x2F;AIM&#x2F;Yahoo! IM&#x2F;Prodigy meant you were not locked in?