That's indeed something worth researching in. First, people are not familiar with credit card micropayments. I wonder what if you had a "snack-machine" for apps that worked with coins, would people buy more apps?
Secondly, a bad app is not the equivalent of just bad tasting coffee, it's coffee that tastes like lemon and makes you puke. It's hard to make coffee that doesnt taste like coffee, while it's easy to make an app that promises one thing and delivers a completely different one.
Third, an app can be malicious, will stay in your system for ever, and the endorphic rewards from it are usually long-term and come in bits. Caffeine reaches your brain within minutes.
Secondly, a bad app is not the equivalent of just bad tasting coffee, it's coffee that tastes like lemon and makes you puke. It's hard to make coffee that doesnt taste like coffee, while it's easy to make an app that promises one thing and delivers a completely different one.
Third, an app can be malicious, will stay in your system for ever, and the endorphic rewards from it are usually long-term and come in bits. Caffeine reaches your brain within minutes.