in the future will everybody be rich

A world in everybody has more wealth than they can actually use? That just won't happen, not least because the value of the money in the bank that everyone has would go right down the pan, thus placing the least rich back into poverty. A more realistic aim is to ensure that nobody starves and everyone has a safe and secure home.

Only if they work hard.

I don't think people will be able to get rich, if they don't want to work hard

i am not sure