That's what I think, but the 2030 World Cup is quite special because it will be a celebration of 100 years of holding the World Cup and also we don't know for sure what the factors are in selecting a country to host the World Cup, it could be that making their league better known will increase the value of host selection later.
Qatar was elected because bribing FIFA officials has now become an issue that cannot be stopped, so it is possible that Saudi Arabia will want to reduce this issue if they are later elected.
However, the 2030 World Cup will be hosted by several countries. If I'm not mistaken, Saudi Arabia will be with Egypt. and one more country, I forget who, will jointly apply to become a joint organizer, but it seems like what the SPL is doing is not just to be selected but actually wants to build a better league, only they use the power of money excessively and usually it only lasts for a short time, when what is expected does not work as targeted and the money spent does not provide adequate profits.
I believe the Saudi league won't end up like the Chinese league that crumbled due to the Covid19 pandemic, corruption and financial crisis, when it comes to finance the Saudi side are financially capable of maintaining their team and so far the introduction of these top players is yielding good result because it's making the league more interesting to watch, i could comfortably sit at home and watch Al-Hilal or Al-Nassr playing against other teams.