The author failed to account for the increased cost required to launch more satellites...
"It transmits data via Iridium satellitesâSâ"âSwhich also allow people to use a satellite phone from anywhere in the worldâSâ"âSand can be programmed to start streaming flight data when a plane deviates from its flight plan, or instruments suggest something is going wrong."
I've looked into an Iridium sat phone for use while camping in the middle of nowhere. The thing is that their network is near or at capacity much of the time. Many times their phones can get signal but can't get a channel clear to make a call.
A quick google search says a cheap satellite is $300 million. I'm not sure how many we would need, but it would not be a small number.