First section would be about how existing as a tool for corporate profit harms the medium. It'd talk about things like concentration of the industry under a handful of companies, predatory microtransactions, the rise of subscription-based platforms where players never really own the games they play, how series like Call of Duty serve as propaganda for the American military industrial complex.
Second section would discuss how video gaming might be different under socialism, based and my own experiences with other nonprofit hobbyist developers - artistic expression over spectacle, an end to predatory monetization models, making the hobby accessible to people who can't afford expensive consoles or gaming PCs, etc.
If you find the second section isn't big enough, another format I've seen is to discuss alternatives at the end of a chapter or as a second half to a chapter. Like, market concentration of the gaming industry would be compared to hobbyist developers and that sort of organization.
And then your last chapter wraps it up by unifying all the threads for the socialist alternative .
That's a good tip, thanks!