It really does fluctuate how much money people make. I literally make no money off adsense so I do branded work from time to time to keep it all moving. I suppose like anything you find a way to keep practicing and make the money to support yourself. I am so fortunate because YouTube allows me to do both. Ultimately money can come in so many different ways if you’re on YouTube, it doesn’t just have to be adsense. I think regardless YouTube serves as a great platform to practice your skills, gain feedback and then push that into the ‘bigger’ idea you want to create.