Really? I hadn't noticed. I've made good money both trading and exploring, I've only dabbled in bounty hunting so far but It appears there is money in that too.
Trading makes the most money, but that kinda makes sense doesn't it? Merchants and traders have always been richer than warriors, explorers and adventurers, no?
There is money but the time vs ROI isnt there.
Trading takes time to find a good route and luck unless you use a tool. Once you find the route, or it tells you the route you simply got to point A, collect goods, go to point B sell. Rinse repeat until your trade route dies.
Anything else for the most part requires RNG luck. The first uss might have the mission content, or it might be uss number 10.
You could farm extraction sites to bounty hunt, until they die out somewhat.
Or you can just trade, with no randomosity and get paid big bucks for little time investment overall. (comparitively)