For a while, apps submitted on Google Play had to be 50MB or smaller. There were a few ways to get around that, like adding expansion files, but generally you wanted to stay under that limit. This can be a pain for some developers. While one might want to make high-quality games, one is limited by the distribution model. Console games can have plenty of times of more storage space. Super Smash Brothers for the 3DS is about 2GB (40x greater), for example. A mobile game doesn’t need a lot of space, but if you’re trying to optimize the app for TVs or high screen resolutions you need a lot of space.
This is why, a few days ago, Google announced that apps can now be double their previous size, to a max of 100MB. While this is far from the comparable with console games, it gives developers a lot more room to develop without worrying about a distribution problem.
Google Play does have a few precautions in place to prevent a 100MB app from downloading on your data plan. Large apps notify the user before downloading occurs, and when updating only the files that have changed will be downloaded.
And while you may get higher quality games, you might end up with fewer of them due to limited device storage. This might get better when devices are upgraded to Android Marshmallow though.