The flow of drugs is at an all-time high, technology (remember the first computers in the 80s lol), online gambling, crypto and many other money makers they didn't have that in the 1980s. C'mon it's a different/smaller world now. Criminals are also one step beyond LE now. One push on a button and million dollars are transferred around the world.
if on the one hand there are more earning opportunities for criminals, on the other the law enforcement have also evolved and with today's techniques it is easier to solve cases