South Korea, Singapore and China all cracked down on prostitution/sex tourism over time, which increased the prices of Vietnamese prostitutes A LOT.

A decent looking Vietnamese girl can now earn a month's worth of salary PER HOUR, and many girls in the business even learn Korean and Chinese to cater to the explosion in demand.

But that also means that the average White sexpat in Vietnam got hopelessly priced out of the market.

Just ten years ago, a $2.000 monthly English teacher salary made you a high tier sugar daddy. Now random middle aged Korean or Chinese salarymen fork out $1.000 each on a KTV night.

Nobody wants to deal with White sex tourists anymore: They have become comparatively stingy, as they are still used to old prices, and are infamous for spreading STDs around.

What's more, Asian guys are highly insecure when seeing Asian girls with White men, which means many Asian prostitutes now go out of their way to avoid Whites, because it could tank their value in the far more lucrative Asian sexpat market.

But it's not only White people whose stocks tanked fast:
Vietnamese Americans, who used to regard themselves higher status than local Vietnamese, got priced out by modern Vietnamese second gen rich kids, and are now also competing with Whites for scraps. 

You now need to be a multimillionaire with good connections to get some piece of the top beauty pie, while an average American salary made you a God back in the days.

The insane competition for Vietnamese girls from multiple countries, coupled with Vietnam's rapid growth, has led to one of the greatest cases of "hoeflation" in modern history.

Btw, I find it hilarious that like 80% of men's insecurities and racism is based on competition for sex