If your Bitrix license has not been updated, then your composite and CDN are disabled. Because of this, your site takes 2 times longer to load than it should. This means that you UNDERTAKE 2 times more income than you can. If you do not update the core, then your site can be hacked, or when the integration (for example, acquiring) is updated, it will stop working for you. And again you will receive less profit plus a warning from the bank!