1. First our greed ruined everything. ALL ASIC companies took advantage of our money, preorders and stuff.
2. The difference was that most Eu and US companies did one time deal and took a lot of money (scam). But some of the Chinese ones did not scam everyone immediately. instead they build their business on top screwing up their clients simultaneously There is always someone to buy their old power hungry USED crap (sold as new) meanwhile new chips and miners are connected to network.Very Very Nice business model:) And do not forget free electricity in china provided by Comrades:)
It is like that one year roi according to their calculations means infinity if you pay for electricity and people buy it
3. As people say if you like it fine if do not like it go and F**K O*F. Generally speaking free market dude;)