You probably never heard of a word called "investment". Where you spend money (or in this case do free labor) because you think there is a solid chance it will result in even bigger payout in the future. And getting your work featured on a huge stream seems like a very solid idea. It's almost like we have definitive examples, that if you are good it will serve as a massive boost to your career. If anything your point of view is hugely twisted and not in the right direction. If a 1view goes to your dm asking for free assets you have nothing to gain out of it, don't do it and instead ask for money. If you see your favorite streamer is using dova syndrome bgm, or no emotes, or crappy thumbnails - prostrate before them and ask if you can do it for free, because a couple days of work will get a ton of eyes on you and maybe their friend will commission you next time or even more people.