Firstly, let’s get this out of the way. When you pay for a game, you’re not actually paying for the copy of the game. In this digital world, a copy of the game is worthless. That’s because little to no labor went into making the copy of the game. So what are you actually paying for when you buy a copy of a game? You are repaying a fraction of the value of the game itself. Now the difference between “the game” and “a copy of the game” is that “the game” is not a physical or even a digital item. “The game” is the item that was created as it was developed. However, what capitalism does is make it impossible to get the labor of the game paid in full. Instead, it makes you pay for every (worthless) copy of the game. And that’s not even mentioning the surplus value that gets extracted from hardworking developers by greedy AAA companies. Socialism would solve these issues. Instead of having to release the game and then rolling the demand dice to decide what percentage of your labor gets compensated, your labor could get compensated in full as the game gets published. This is also good news for consumers, as now they can freely redistribute copies of the game without preventing labor from being compensated.
I believe the USSR had arts grants that would cover things like films and stuff, no reason to think that a socialist state couldn’t have a similar idea for games.