The idea is sound, but on the ecosystem level, it can be dangerous. With an all-proprietary/commercial solution, this is not a problem - a helathy profit margin is everybody's interest. Here, however, the table turns. Free software doesn't care about other people's profit margin. Make higher quality apps, you say ? It's not that easy - resources (time and money) are limited and there is no inherent guarantee that a classic-model oriented developer will be able to keep up with a successful large OSS projects that has hundreds of contributors. In those terms, the higher pressure on commercial developers is a double edged sword with regard to the end users - you might get higher quality apps, but at the same time that might be the cause why a commercial project folds.