There is no competitor, not on the same scale. There are however initiatives that matter. Platforms created by YouTube creators unhappy with YouTube policy like https://nebula.tv/ and https://www.2ndtry.tv/ ; open-source non-profit developers created PeerTube for example https://peertube.tv/ ; there are competitors in live streaming like Twitch, competitors in professional video hosting like Vimeo. Obviously that is not a one-stop shop like YouTube and a lot of those competors operate under the same laws; but the more traffic those platforms get, the more likely a creator is to (also) post there.
There is no competitor, not on the same scale. There are however initiatives that matter. Platforms created by YouTube creators unhappy with YouTube policy like https://nebula.tv/ and https://www.2ndtry.tv/ ; open-source non-profit developers created PeerTube for example https://peertube.tv/ ; there are competitors in live streaming like Twitch, competitors in professional video hosting like Vimeo. Obviously that is not a one-stop shop like YouTube and a lot of those competors operate under the same laws; but the more traffic those platforms get, the more likely a creator is to (also) post there.