Given their resources, they can easily organise a good championship, of that I have no doubt, because it goes beyond the internal football organisation, when they were buying players to draw attention to their league. Now it's on a national level, because the World Cup brings tourism and investment. If they prepare well, tourism will blossom even more.
This oil-producing country is indeed accustomed to holding international events, from sports tournaments to global meetings. On the other hand, Saudi Arabia's domestic league is also the best league in Asia. So, it is not difficult for Saudi Arabia to host the World Cup, with the support of abundant resources and continuously improving infrastructure development. They have the capacity to host the championship, and even if there are still shortcomings, the time for holding it is still long, Saudi Arabia will host the World Cup in 2034, so Saudi Arabia has enough time to prepare everything.
In addition, on several occasions the Saudi Arabian government has stated that they do not want their country's income to be too dependent on oil, they want to invest in other sectors such as tourism, and perhaps this is what makes Saudi Arabia so eager to host the World Cup. Because the status as host will also have a positive impact on the tourism and investment sectors, which of course will further boost the country's economic growth.