It&#x27;s tragedy of the commons.<p>Bitcoin is designed for having rational actors as miners.  The miners profit less from the larger block sizes, and since they control the block size it&#x27;s not going to happen.<p>Bitcoin users who think the miners will do it &quot;for the good of bitcoin&quot; don&#x27;t realize that the entire bitcoin ecosystem is built on the miners acting in their own best interest, not bitcoin&#x27;s.