You are right about being rich or not is a choice but do you think that if you say that to some dirt poor person who lives off of food stamps and the pity of his/her neighbors, what do you think will be his/her reaction? You can't make choices if you know that choosing will only lead to more suffering. Not everyone can get a job dude, if what you are saying was true all along, there will be no poor people that are living on meager lifestyle.
There is also the ethical question as well, most rich people came from rich parents, Bill Gates' family was rich, Elon's family was rich, Jeff's parents were rich, Warren's parents were rich and politician as well, basically almost all of them are/were rich, sure there are many rich people whose kids never became world's richest person, so I do not want to just attribute it to their parents, but that is where ethics came into play.
Any, and I mean ANY poor person can become rich if they just have a horrible ethical standards and flexible morals, all you do is illegal work and you become rich, sell drugs and become rich, steal and become rich, not like you would be denting the world.
This is not a way I support how you should become rich, but do you think "real" rich people do not steal? Or do not sell drugs? Look at Big Pharma they decide what is legal and what is illegal, they give people things that make you high as legal drugs but if you smoke pot that's illegal. Life is all about who you can bribe, not what you do. All rich people, ALL rich people have bad morals and bad ethics, without a single exception.