now back in the day of say 2013 they could run as scam let me tell you ....butterfly labs was the darling of coindesk and the industry ...never came thru
paycoin by gaw miners......big balls on that attempt....not to mention alpha tech which did keep paypal took 1/3 down....waited till 45 days went by
so paypal and credit card disputes were over..and never shipped...
2018..no one has pride in their work anymore
Ah yes, the good old bad old days. I remember the BFL scams, and heard about the paycoin scam. Missed the alpha tech scam, and who can forget the numerous cloud mining scams.
I guess that today the pickings are so easy that you don't have to have any pride in the scam. I guess that's what blockchain everywhere and BTC popping to US $20k/coin will get you. Oh, and FOMO. Can't forget FOMO.
FPGAs are not new, in fact in 2012/2013 FPGAs were the new hot thing that was going to kill GPU mining.

Turns out that ASICs killed FPGA mining, and the GPUs soldiered on.