Inara already has a search engine for that, albeit in beta.
The community site for Elite: Dangerous, Starfield, Kingdom Come: Deliverance with the game databases, information, gaming news and other handy content...
inara.cz
Not necessarily.
Yes, you can make I guess up to ~200mil/h using some methods. I'm making a measly 120-140m/h core mining, for example, cause I enjoy this method.
Now, I enjoy some aspects of on-foot gameplay too. I do core mining for money now, but if I had the option to farm on-foot mats for comparable amount of money, I might just do that. And there might be more of such folks who would be willing to do that instead of pax, trade, mining etc.
That is the point.