Basically what has happened by bitmain opening the floodgates to FPGA.  All the hidden miners and manufactures are scrambling to dump what they have at premium before that market becomes diluted. Mining for the common man is done. What we see here is last ditch effort for people to make a buck.  If you look at any industry that has been successeful and produces a great product has and  will always be centralized.  No one wants to wait for parts in the end.  Comes down to time is money. Even if you outsource at first you will eventually look to making in house to save a buck.  Centralization is inherrant in nature.  To think btc and any other alt will somehow defy this is absolutely naive thinking af best.  Negligent if you ask me.  This system will go to the rich.  If you have a dollar or two and want to learn/piss money in the wind then  buy a couple cards. Don’t ever think you will Get rich. Bitmain and the likes a will see to it that doesn’t happen.  Hell they are prolly behind most of the coins at this point.  The trust in this system is eroding very fast.  Until price drops down where even miners can’t be given away then and only then will we see a return of those that are in this for the right reasons.  This has become a rich mans trick at this point.  Don’t be fooled.

Best Regards