That's 6 months later than the current release dates.
Think about why we ended up in this state in the first place. There was nothing stopping pubs/devs holding off releasing later other than their own economic reasons. They could all choose to release 'when it's ready' and be three years longer. Or they could choose 'just another six more months'. Or they choose, "let's release it now anyway."
From a production POV: I don't like releasing anything unless I know it's pretty much done and bug free. I take 2x longer than everyone else to release anything! At least! The longer you spend on it, without a clear release date, the more you can see that you want to add and improve. Diablo 3 released in a very different state to that it was two years later. The devs could have held off for two years and made the superior "two years later" release the launch release. Doing so they would have made les money.
Alternative a dev can release simpler. Put in less and just make sure it's bug free. Now you've less of a game, less exciting and inspiring but hey, there's nothing that sucks about it.
On the flip side when you have something out there and users using it and liking it and complaining about it, you have something that's generating income and connections and motivation.
I could release my current project tomorrow. It'd be okay. But it's a bit flat, needs some more interest, needs more variety, different balance. So I'll work on it just a bit longer. Without a deadline, I can just keep working and working until it's perfect and the market has moved on.
The situation we have now is the natural product of free online patching and the difficulties of the creative process. You have to release at some point. Without the exacting deadlines of old-school Gold Master prints, there's no logistical way to nail down a game in development between ever-evolving features and bugs and consumers who will pay almost no matter what state it's in. Pubs aren't going to take on the costs without reasons. Until consumers give them the financial reason to adapt, they won't. They
can't really, if operating their business as a business and not a hobby or charity. Business practices means maximising revenue means getting it out there when it hits that "this isn't too shit to sell if we market well enough" threshold.