Is this an ad or a question? I would say domain knowledge and experience. I've been in my industry for long enough to spot situations where my work will have disproportionate impact. The longer I am in this industry, the more knowledge, contacts and followers I have, so I can be very effective at building things, getting them validated, and finding users for it.
It’s a bit of both. I’m not in the industry or part of a company yet—I’m still on the younger side. I’ve had many ideas and I work on them, but nothing really takes off. I keep coming back to the same question: is this worth it? Especially because every idea I have, I run it by my friends—they love it, I build it, they don’t use it, and I’m left with a dead project, a half-empty wallet, and goals I could have pushed…
> Please don't use HN primarily for promotion. It's ok to post your own stuff part of the time, but the primary use of the site should be for curiosity.