Al-Nassr can’t rely on Ronaldo to win every match and other stars too need to step up and help the team win matches. Lastly what are you’ll thoughts will Salah make a move on the last day because if the new rumour is true then Liverpool can’t turn down such a huge amount and while it may derail their current season but it’ll help them improve their finances for the long run.
It is true and they know this. Bringing Ronaldo into the club was not to be dependent on him to win every game that would be too myopic of the club's management. Rather what I think is that he is acting as a catalyst for the other teammates. To improve their performance to influence them to and we know that it is working. Ronaldo will not always be there, they want to birth more stars from the Arab world through him. As for Liverpool, Salah isn't going he has made his decision known.
The best players like Cristiano Ronaldo, Karim Benzema, Sadio Mane, Neymar Jr joined the Saudi league and took the league to unique heights. Thus, if Saudi clubs add good players from more European clubs in the next season, then European football will be under some threat.