Why do people expect the feds to just know what's going on in every corner of the internet?
Because they built a huge mega multi million dollar facility to funnel every bit and byte through the US of A to do exactly that...
They got resources but not by far to control everybody. This is why there are plenty of criminals out in the open.
I did expect however they would find the hacker who stole so much money.
Many of the "plenty of criminals out in the open" are potential future assets to a corrupt government. The people they really seek to control include (among others) independent thinkers, pro-freedom "radicals", and idealistic believers in the possibilities of Bitcoin.