Iridium considered to be viable, it's just late for few years, when already appear affordable global GSM roaming, when Iridium literally made to be very simila

Iridium considered to be viable, it's just late for few years, when already appear affordable global GSM roaming, when Iridium literally made to be very similar to satellite GSM. Starlink is totally different beast, as it is magnitudes faster than GSM and literally belongs to broadband Internet, when have virtually global coverage (yes, exists 4G and even 5G, but they don't have global coverage now). These are somewhere similar to cryptocurrencies, which lose 1st world (and most important market), because created by scientists of 1st world, to solve problems which are not important for first world, and 2nd/3rd worlds are not capable to maintain sustainable development/support of crypto-technologies. So from first look could appear as cryptocurrencies are not economically viable at all, but I think, their real problem, that 2nd/3rd worlds are too fragmented to gather resources need to develop solution of their problems, not just be involved in works of 1st world developers.