Satellite phones are much expensive even now but when we are talking about the future then its certainly possible and no one can stop an individual from spending his/her money that is what we need to adapt to bitcoin and decentralized cryptos, these speculations and profit-making are not even in the satoshi's vision which are just formed due to its volatility all the time.
The price of satellite phones should decrease significantly if production scales up to suit greater demand.
Satoshi's vision is an awesome topic, I wish we had more threads on it. I think Satoshi had a good design of appealing to miner profits to secure the network against 51% attacks. Maybe he would have a good answer for things if he still commented on these issues.
Network connectivity is nothing more than a problem that needs to be solved, and the solution may not be satellite. It can rely on any network connected to the Internet (a third-party network) to send transactions, but the problem remains is whether Bitcoin will have value as a means of payments?
Let us take the case of Myanmar: if there is no person to buy bitcoin, then its value in Myanmar is zero, regardless of the possibility of sending it or its value in the rest of the world.
When major problems arise, people search for food, drink, and security and exchange them with each other.
Money loses its value when there is no demand for it. The Lebanese pound, Zimbabwean dollar and Venezuelan bolívar
I've noticed nations do not revert to gold or silver based economies after natural disasters. Maybe some form of internet based barter system would be suited to venezuelan or zimbabwe hyperinflation.
Bitcoin is already pretty much challenging - as technology - for average merchant.
Then the normal shops will not officially accept bitcoin, since it's banned (you expect to have no internet, and still bitcoin accepted?!)
So you'll want that the merchant as person to accept your bitcoin, reading info from the internet via your satellite phone, using a technology he doesn't understand and you do.
He will have to trust you too much... It's not gonna happen.
I think satellite based blockchain would function almost identically to normal internet. The main difference is plugging into a satellite modem (with a dish or antenna) rather than a telecom one.
Merchants could have their webpages supported by satellite DNS/ISP. Which would route independently of the earth based internet backbone, allowing full functionality in the event of power grids going down or ISP's being down for maintenance.
What I'm saying could sound futuristic or out there but it could be a natural progression for internet based retailers to eventually offer satellite based service via default to reduce downtime.