Sure, the Chinese have clones - but it's only the hardware that's copied (very very expertly, by the way). The software is not installed on the chinese phones.
In fact, the software that IS on is pretty shitty, but the only reason why they sell so well in China is because of this one reason:
People in China want cheap phones, they'd rather pay $500 RMB as opposed to $500 USD. They're not interested in Maemo, or Meego, or all the cool things phones can do, they just want a cool looking phone.
Believe it or not, Americans, the Chinese copycats are creating their clone phones for themselves, not for the curious few Americans who buy them.