“Hard times create strong men. Strong men create good times. Good times create weak men. And, weak men create hard times.”
second/Bold part of this quote explain Saudi's situation best. Every regional power such as Pakistan, Turkiye and now even Iran is fighting tooth and nail for their interests and survival, heck even non state actors like Hezbullah/Houthis/Taliban keep fighting and engaging their alleged enemy and gain priceless experience, despite the losses. But KSA/Qatar/UAE/Kuwait they still think that they can just buy their way out of everything, they were building these nice cities and a comfortable life for their civilians, which is fine by me but those comfort and luxurious life style has turn Saudi Armed forces into practically useless, despite a dire need of a ground invasion KSA still hesitate to dedicate troops for ground invasion, maybe so they can see the writing on the wall? that it will be a bloodbath for their soldiers and those who survive will carry all that Trauma/PTSD back home which can lead to revolutions and civil unrest. KSA can buy fancy planes, tanks, AD systems but without a Army willing to fight tooth and nail for their country, they ain't winning any wars/conflict.