It takes time to grow an audience, and if you’re very lucky maybe 5% of your audience will actually give you money to do what you do.

Even if you manage to stand out in what is a fairly saturated market, it will be years before you have enough people following you to make enough to live on. And to grow that audience you will have to put in constant steady effort all those years while seeing little to no return for it. If you waver, if you stop putting in that effort, the audience will start to go away and any momentum you had going will fade. And even if you do keep it up, there’s no guarantee that you will make a decent living from it.

It is not impossible, but keep in mind that turning it into a job will mean that it is a job. You will not spend most of your time playing video games and having fun. Most of it will be spent doing things to manage and grow the business - all of the technical details that go into setting up a quality stream, all of the social media aspects of interacting with your fans, all of the bureaucratic details that go into running any business.