I'm making a big game in C2 and I've got a publisher, so I've made a decent ammount of money (enough to keep me going, buy new equipment, a business C2 license, etc).
C2 is only a toy for kids if you want it to be; if you want to make a decent ammount of money you can't expect it to just drop from the heavens right into your lap. You have to make a decent app, publish it, advertise it, send it everywhere you have the chance. Last year when I started making my game I decided to take it seriously and built a prototype, then added it to Steam Greenlight, made a Devlog, posted it on a crowd-funding website, sent emails to video games magazines/websites/blogs from my country, I really went all in. The feedback was enough to get the attention of my publisher, so they contacted me and we've made a deal.
Of course, I think most people want to build an app in 2 days and complain about how you didn't get rich when you posted it on the android market, but I don't think that's how it works.