I'm not sure what the problem to be solved here is. It doesn't seem reasonable to force YouTube (or any other free video host) to indefinitely store and host content.
If you want something to stay around on the internet it has to take up space on somebody's drive and bandwidth on somebody's network connection - and for sufficiently large content like video you're going to have to do that yourself or convince/pay someone you trust to do so on your behalf.
If you want something to stay around on the internet it has to take up space on somebody's drive and bandwidth on somebody's network connection - and for sufficiently large content like video you're going to have to do that yourself or convince/pay someone you trust to do so on your behalf.