Really you're asking two different questions: 1.)How to get noticed out of a sea of other rippers? 2.) How to actually make it once you've gained attention?
From what I've seen, being able to do tough or gnarly tricks, with a sort of ease and comfort (what most commonly referred to as style) will gather you some attention. In other words, make sure your nollie flips appear more second nature for you than walking.
Now here is the real question. Once you got that flow or am sponsorship, how do you transform that into a skate career? You guys all mentioned being able to mesh well, connections, personality, drive etc, but there is one intangible quality that seems to trump all of that: Charisma.
You might have the most abrasive personality imaginable, you might be a straight up kook, but if you can somehow draw people to that, you are gold. Take for example TK and Nick Merlino. TK isn't even in the top 1,000 list of greatest skaters and you would prob want to strangle Merlino if you were in a van with him, but both those dudes have made it thus far being naturally charismatic.