Could it be that the handful of people with computer access were well connected & well regarded, & the people running the radio broadcasts wanted to cater to them especially? I'd imagine there could be some sense of personal & national pride & prestige around supporting these emerging technologies & promoting them to the public. (I'm just guessing though - I wasn't there & haven't studied the topic in depth.)

My guess would be that the broadcaster had one geek who pushed for that. Fellow geeks had software over the radio, the broadcaster had an opinion of a modern one, keeping up with the newest tech. Win-win.