The problem is, while a high-quality freeware game like mari0 does mean that LÖVE does meet the minimum feature set you'd need for a game, it doesn't mean it has the tools or widgets or features you'd need in a commercial game.
For example, does the game render and perform well on all target platforms? For a freeware game, if it doesn't work on some video card, so what. For a commercial game, it means support headaches, lost revenues, and bad reviews and/or user comments.
It made HN a while ago, link to discussion: https://news.ycombinator.com/item?id=3665859