Funny you use "will be" here, because this is already happening. Have you looked at daily Steam releases lately? It's 90% AI-generated hentai games, asset flips, or AI-generated hentai asset flip games.
Right now the limitations of genAI tech are limiting the types of games that can be pumped out, but Genie is just going to be more of the same; instead of a clearly AI-generated, painfully uninteresting hentai game, you're going to get clearly AI-generated, painfully uninteresting Call of Duty clones. You can ask the developers of Concord, Highguard, Marathon, etc. how successful bland shooters are these days.
The self-consistency just doesn't seem to be there to make a coherent playable game (easily, broadly - many types of games, styles, etc).
Music gen AI is pretty good, and with a reasonable amount of finagling, you might be able to pull that off generally.
From a coding perspective, you can probably make simple games with minimal skills already, and I can definitely see it being possible to create pretty sophisticated games with minimal bugginess with minimal coding skills in the near future.
Is that combination good enough? I doubt it outside of niche games for quite some time
Is it? I have quite a few friends that are relatively successful music producers/djs, and they don't seem impressed. A lot of music gen AI fails to match prompts at all. Maybe I am using the wrong tools.
It also seems quite difficult to iterate on a sound.
I'm not saying that video games should be confined to today's paradigms, I'm just happily curious to see what will happen with it.