Firstly, we will also support other big platform like Twitch, Vimeo, etc. So it won't truly feed into the monopoly.

Secondly, people who aren't afraid of getting youtube banned or demonetized (think like gaming/cooking channels) don't see much of a purpose in our IPFS upload. For them the fact that the videos 'go down' is super bad and pushes them away from dtube. If those people start using the free storage offered by YouTube, we will suddently be able to afford to keep good IPFS videos for longer, or more of them at least. And their video will keep loading (and keep on being monetized through blockchain)

Thirdly, STEEM is inherently very limited in terms of contents because of the restriction on 'original contents'. Allowing links is synonym to allowing non-original content, which means we won't technically feed youtube. I don't want to put our videos into YouTube's catalogue. I want YouTube's video inside our blockchain instead.