[vecter]

This is entirely unrealistic and totally detached from reality. Someone like Travis Kalanick simply cannot reply to everyone who emails him. He literally wouldn't have enough time to do that if he just replied to emails 24/7/365, along with the work associated with replying to those emails, which is often way more than the time to write a response.

The truth is, most people don't value your time because you don't deserve their time. I don't mean this in a moralistic or judgmental way. It's just reality--they don't know you. If I emailed Mark Cuban, the President of the United States, or Jeff Bezos and they didn't respond to me, that doesn't make them conceited jerks who "aren't worth my time" and it doesn't make me any less of a human being. There's no need to get emotional or moralistic about this.

When it comes to trying to get in touch with someone whose attention is valuable, it's best to put your ego aside.

If you're talking about someone who in theory "should" respond to you (a coworker that you have a dependency on, for example), what you said makes more sense. But the conclusion of "they're not worth my time" because they missed your email or forgot to respond to it is ludicrous. Imagine your colleague emailed you, and because you're a busy person, you didn't respond (I'm sure that's happened at least once in your life). Then later they told you to "kindly fuck off" as they passed you in the hallway. How ridiculous would that be?