I also learned that the investment gains are capped, since public relation is capped at 100%. Since everything costs exponentially, this means that it's impossible to keep up with the game from investors' money alone. I gave up on playing the game after few in-game years waiting. The game also doesn't really go anywhere without mining asteroids, as I no longer receive new logs from this new way of playing.
So I guess the "mining and destroying the world" part really is the only intended way to play the game.
And for my feedback.... I got somewhat terrified (and a bit disturbed) when the gradual world change is also accompanied with the gradual "darker" music change. It really gets to me when that happens, all the way until the last stage of environment destruction! So I guess that musician of yours have accomplished their task on trying to stop me from "progressing" any further. Now I don't want to mine asteroids anymore lol.
The game also lacked the ability to save, but judging from the finite gameplay, I guess it's fine, since I don't plan on replaying the game anymore.
One last thing to note, change the splash screen. It's not even difficult to do that from Godot itself, so please do it in the future.