Well, the problem comes when there are those who want one of the games but can't afford it or miss the small timeframe that it is available for, which leaves many unable to receive the game.
I won't argue that it is ideal. I'd love every game to be widely available. I get the compromise that niche titles have to find other models to be sustainable. I missed a few LRG titles due to limited availability. That said, I wouldn't begrudge them because they do need to stay in business and they aren't some big company raking in profits.