The big problem is AC's current gen though, making youtube videos about Verdict Day (if Verdict Day is your game of focus) and expecting a large following might be a bit of a stretch. I'm not saying to forget about it though, it'd definitely be good to get your feet wet if you're really interested in doing videos that you and others would enjoy. Who knows, AC6 could be around the corner with the potential of being a mainstream title thanks to Fromsoftware's recent success's with the Souls franchise, It'd be good to be on the scene as early as possible if that were the case. The sooner you get comfortable making videos and getting your name out there, the more chances you will have to capitalize on possible money making opportunities. I wouldn't worry about Fromsoftware blocking videos as long as you have your persona driving it, the amount of popular videos of people playing Bloodborne is staggering and I'm pretty sure many of them are making money. There's also the option of streaming your videos on Twitch, get popular enough doing that and people will throw money at you.