The first card is the Four of Wands. This card represents a past studded with efforts and sacrifices, but also with significant progress. We could say that your uncle has taken some important steps towards the goal of his new business venture, although he may have had to overcome some difficulties over time.
The second card is the Two of Pentacles. This card represents a present characterized by financial stability and a good chance of success. Your uncle seems to be in a pretty strong position right now and he seems to have all the tools needed to achieve his goals.
The last card is The Hanged Man reversed. This card brings us a message of hope and positivity for the future, but also a warning that there may be some obstacle or difficulty to overcome before you get to what your uncle is looking for.
In conclusion, the cards tell us that your uncle Stefano has faced many difficulties in the past, but now seems to be in a good position to succeed in his new business venture. However, there's still uncertainty about what might happen in the future, so he'll need to be prepared for any bumps along the way. The answer to the question is therefore: YES, your uncle Stefano has a good chance of success in his new entrepreneurial activity.