Isn’t this just leveling up? Getting better, doing more? Not really. You do get better at doing things as the game goes on, but what does that mean in the larger context of play? In D&D and the games that slavishly copied its structure, leveling up and getting more scratch means delving into bigger and badder dungeons to get bigger and badder loot and eeps. You do it for its own sake, because that’s the point of the game. This isn’t bad, but the extreme end-point of this design is Diablo and its sons. Whether that means “fun” or “soul-draining a click at a time” is a matter of opinion.
In Freemarket, getting better for its own sake (in fact, getting more of anything for its own sake) is pointless. There is no scarcity of the things you need, but there is scarcity of the things you want to do, and scarcity of time. The setting and fiction you make in the game is shaped by the fact that the people in the game are functionally immortal, but you, User, you do not have forever to play this game.