"Play to earn" games are work, not games. If there is a way to earn money directly and officially, the vast majority will do (or try to do) it for profit and the whole "game" will be centered around it.

Sorry, but as a gamer, who also studied gaming (history of games), I can tell with a high degree of certainty, that it is a HORRIBLE idea to implement ways to earn real money in a game and also expect a fun, casual community to be formed around it. Even if there is a possibility to play for fun at first, the incentives will inevitably push towards min/maxing profits. This will push out everyone who is not doing it as a job. Even is the game itself is fun, the barriers to entry will become massive or the grind insurmountable for casuals. Not only this, but the developers will be forced to cater to the needs of the industry forming around the game and it will inevitably make the game itself less fun and even more profit oriented. There is no precedent of a game going in this direction and still being a GAME first and foremost. Even popular e-sports titles are only "for profit" for the top 0,1% of the playerbase and never directly ingame.