Is it oil again? Oil is worth so much more than women who really ought to know their place.
It's pretty much oil, yes. There really isn't particularly much else of interest to the rest of the world on the Arabian peninsula. (And, yes, I'm fully aware that several Gulf countries, including Saudi, are making some major efforts to diversify and turn themselves into, essentially, service based economies. It's still propped up by the fact that they almost literally pump cash out of the ground, mind.)
Up until about the 60s or 70s, the gulf states were essentially desert backwaters with nothing much happening. Nowadays, they're in many ways economically over-developed desert backwaters. And, in all fairness, and as despicable I believe their treatment of women and, for that matter, political and religious dissidents is: there's also a point somewhere in there about social change failing to keep pace with a sudden influx of material wealth. Just look at the social upheaval caused by the industrial revolution. And that, at the end of the day, might have been a somewhat less drastic change than going from a desert dwelling people to rolling in oil money within a few short decades.
And, no, none of that excuses how Saudi treats actual real life humans.
And, yes, Saudi women should get asylum by default.
And don't even get me started on slavery of the traditional persuasion, also still alive and kicking in the Gulf.
But, yeah, it mostly is oil. Or more like: the fact that it happens in a wealthy, seemingly modern society and that we even know about it is.