Here's a quick few inspiring examples that shows it never hurts to ask.

The worst they can say is no.

The first example is how I simply asked Mike Michalowicz if he would come on my podcast...within in minutes, he said "YES, let's do it!"

And then during the interview (episode 389), he shared with the listeners that sometimes you just have to reach out to your clients directly and ASK them what they need/want.

Your biggest opportunities might be on the other side of that question.