Interesting thread.
The big companies NEED big income to survive so wouldn`t be interested in smaller, less paying apps. But its these apps that will provide success for us individual developers. Its about scale.
Take for example, Minecraft, which has just been bought by Microsoft for $2.5 billion. That is a MASSIVE success, if we`re gauging success by the amount of money earned, and if I were Notch, I`d be ecstatically happy - but would MS buy any of my apps that are worth an almost infinitely tiny fraction of that? No of course not, its less than the value of dust to them. But I can collect all of my dust and consider that successful for me because I only need a infinitely tiny fraction of what Microsoft etc needs.
If you don`t earn an amount that catches their attention, they should leave you alone.