The central banks wanted inflation, but they got some perverted form, where wages and prices remain stagnant, and only stocks/real estate/etc have had their prices increase.
I mean, as a sorry Java jockey, I make around $5,000 per month. I frequent Reddit, a news aggregator with comments. Reddit is worth $1,700,000,000 dollars, according to the latest funding round.
It's seriously disappointing, but if the claims by people crying out about "Chinese money" are correct, 15% was never going to be enough. If your concern as an individual is your currency losing 50% of it's value over night [likely worse case for these individuals], then a 15% tax, even in a bubble market starts to look like a good deal.
The government and their developer pals were counting on the tax not making a huge difference. And when prices started moving down they immediately relaxed it to counteract that. At least that's one way this story can be told.
There were already loopholes where foreigners could avoid the tax through local corporations or have relatives buy for them.
I officially don't understand how markets work anymore.