It's not about losing money ... it's about losing confidence that Apple values the contributions of third-party developers to their success...
We are not only paying 100$, we are giving them a percentage of our revenue, ideas, time, and customer satisfaction.
They should at least communicate. I bet most of us accept any explanation as long as they communicate at all.
It's not only Mail, Safari, Maps and iTunes that led to their success.
EDIT: Just to be clear: If I had only 10.000 customers who are paying $100 per year, I would make damn sure they know what's happening on my end of this deal. Especially if it's affecting their business as well.
It's called "Managing Expectations"