With a new monetised platform, with money being incredibly obvious on the UI, the incentive is pretty high to just steal popular content from YouTube and repost it. How do they ensure original content or ownership?
That really seems like an argument that is made only to hurt startups.
you're looking at this the wrong way. Yes, startups should enforce copyright. But so should facebook.
They just get away with it because they are big
This has become a big issue on the STEEM blockchain - plagirism, irrelevant junk etc.
Generally the STEEM blockchain is otherwise very fast and healthy but the content issue putting it strain from every front.
some basic info is here : https://steemit.com/hello/@thefreebird/init-1