Computer usage is nothing new in the U.S., people just used to find a university or business to buy mainframe time from. Microcomputers just meant that they didn't have to maintain a relationship with a university.
It went from having to go out of your way to locate and operate with a bookie who had little away with the sports organization to... Pulling out your phone and tapping a couple of buttons, paying a legitimate business who can then apply enormous legislative and financial pressure directly against the teams with billions in backing.
It has dramatically changed the state of gambling, sports, and the businesses around them.
I'm talking about the bribe risk for a referee. It was always there. Probably even more so in the past when the mafia controlled vegas and bookies across the country.