Everyone of us earns money from different sources, because everyone has different combinations and wealth giving planets.
For ex: If mars becomes a wealth giving planet then that person can earn from land, army, military, police, engineering etc. If Moon then from art, dairy, navy, farm etc.
But the role of Jupiter and Venus is totally different. Jupiter is protector of wealth and Venus is happiness from that wealth, and also Venus is accumulation of wealth but protection is given by Jupiter only.
Please don’t compare the beneficence of them. They both are equally beneficial but Jupiter has more power and ability to act.
There is a story: Venus has a daughter “Daivayani”. She was cursed by the son of Jupiter, that she will have a bad married life. So Venus was worried. At the time of marriage of Devayani, Venus called Jupiter and said that something bad will happen in this marriage. Nothing bad happened, because Jupiter was present in the marriage, Venus surprised.
Hope you get my point that Jupiter is a great protector. Now logically, Jupiter is wisdom. If wisdom is not then all wealth gets destroyed due to bad utilization. You must have seen many people who earned very well, and also lived luxurious lifes but at the end they made mistakes and wealth is gone.
You must have also seen people having less income but living luxurious lifes, and showing off. This is a great example of a very weak Jupiter and strong Venus. Sometimes these people can borrow money for their luxuries because of such strong Venus.
In short, wealth can be earned by any planets, we enjoy it and make our life luxurious with the help of Venus, but the wealth is protected by Jupiter.