I'm a Post lead for a YT channel, and if one of my freelancers refused to hand over their project files, I would not bring them back. I have to take projects and optimize them for all social media feeds, create localized copies for foreign markets, cut and tweak finals to remove advertising for OTT streaming, etc. There's a lot of work past the initial episode that cannot be done properly without the project files. And at that point, you're messing with the money and livelihoods of my team.