Blockbuster came pre-installed on my phone. It's been run exactly 0 times.
Just because you pre-install something on my phone doesn't mean I'm going to use it. Think pre-installing AOL on those Dell laptops..
Unless you make it the default camera app, I guess. (Which still doesn't guarantee people will click the 'Color' button once they've taken their pic, or keep it enabled in the settings, but it's still a big head start.)