If you are apart of a mining pool or know where to look at mining charts showing geolocation of miners, you will see there is stall a vast amount of miners in the united states, and southern american parts like brazil and peru as well as some european and other smaller asian countries.

So long as there is a supply and demands for coins that are mineable, there will always be miners. It is naive for these companies to think coins can be sustainable without mining the currency. How do you think the network remains secure and actually live? POS (Proof of stake) is not sustainable enough a system by itself. You need to start looking at dual currencies that use coins and commodities, this means boosting the POS network with proof of work (mining).

People that don't fully understand the market are also those with the big labels, please understand there are definitely companies that understand how this work and will throw publicity stunts to capitilise on how volatile the market is at the moment to try and cause fluctuations in the market place. To properly understand the trends, you need to start looking at what the miners are actually mining...