It's hard, but doable. However, it is extra hard when you have the kind of show that feels just like everyone else. If I was planning a gaming channel I wouldn't choose certain games that would never get me ranked high in search. I wouldn't do this because of saturation. Minecraft and COD come to mind. If you are going to do those two right now you better f'in bring it. I would research games with a lot of global searches and low to medium keywords and do a let's play on those. I think when starting a channel now you just have to be a little smarter or savvy with it than those people back in the day. Luckily the tools are out there (like YTtalk strategies and techniques stickys) ebooks, but heck yeah it's hard work, but like I said before it's doable.