This is What'll Happen
My 2p...
Those networks that roll it out "as standard", part of their packages, what they'll find is that it largely goes unused. There will be sporadic, occassional use, or very concentrated use (such as in those Pacific islands mentioned in the article, where I'm guessing cell, WiFi and broadband coverage is a bit thinner). Then they'll wonder why they're paying for it if no one is using it, and stop providing it.
Those networks that have it as a paid add-on are likely to find an initial flurry, and then they too notice that punters aren't buying it. But, at least they're not losing money on the deal.
The problem with all this kind of thing for retail mobile telephony is that, having spent so much time building out huge networks of cellular coverage, and with most punters also having access to broadband or WiFi at home, work, in some cities, on trains, buses, and planes, there's comparatively little call for retail satellite mobile services. And if the tech allows them to start offering fat broadband pipes in preference to cellular coverage, it'll cost quite a lot of money and will probably flatten phone batteries pretty rapidly, and won't work indoors anyway (which is where a lot of people in air-conditioned countries spend their time anyway, along with a WiFi hotspot). No one in their daily lives wants to have to sign up to each and every WiFi service in whatever buildings they're walking into, simply to get coverage. Cellular service coverage inside buildings is a major aspect of its service provision, and also the reason why the original networks are focused on the 900MHz band which is the ideal compromise for mobile antenna size and good penetration of structures.
Things may change, of course, but I strongly doubt it.