People generally do things for their advantage.
The best situation occurs when both sides are made better by the situation.
The easiest question to ask with relationships is what does either side gain or sacrifice?
In the West, it is still expected for a man to have a job.
In the West, high earning women expect a man to have an even better job.
In the West, women don't really wish to be obedient.
In the West, you can have sex without marriage, especially as a man.
The question then becomes, how would a man in the West benefit from having a Western woman?
Love or good personality is one thing.
But beyond that, it is much less tangible.
Contrast that with a thai or more eastern woman. They get a 'nicer' man that they would have back home. One who is probably more lenient and probably a good standard of living. So they have something to gain. And the man, gets a partner for building a family or household of his own.
The same problem occurs with Western woman. They often make their own money, so they don't need that from a man. Of what do they gain from marrying a western man?
Again, maybe someone to love or a good personality.
But marriage has generally been more about rights and duties to build a household than anything about love or getting along.
And that plays itself out quite well in society.
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I guess I could even provide myself as an example here.
Maybe it sound selfish, but that's just how people are.
I'm a guy with a good job. My wife also has a really good job.
But her job is much less of an asset for me. She would not want to be supporting me. She's not going to let me stay at home with the kids while she works. So I'm going to have to work anyways

I don't need a very extravagant life style and what I would want is someone to love and enjoy time and create my own family with.
Being an independent woman means having to attend to her leading needs like going to her business functions, family, friend stuff..
That's on the cost side of the equation. Not to mention conflicting goals and what not in life...
You don't have those 'costs' with that 'simple thai girl'.
Now, I probably could not bring myself to trust someone like that thai girl from overseas in terms of they being in it for the long haul... Their alternate motives might be too great for me to handle. But I can definitely see the appeal of it.
And I don't really need someone to cook/clean, so there's not much benefit to her either. I've cooked and cleaned my whole life

And I certainly don't see much wrong with it. She gains and he gains and life is for the better.