From a purely theoretical level, there's a very broad range of incomes worldwide, so any price point you use to keep spammers out makes it unaffordable to the average person in many nations, and varying pricing by nation just means the spammers pretend to be from the cheapest nation(s).
We also have a demonstration of payment-based messaging systems in that price range with SMS and voice calls, which still get junk. (Nation-specific: my German SIM gets none while my UK SIM gets a lot… but only when I actually visit the UK).
For subscription-based payment filtering, similar — while it's hard for me to determine which of Musks's statements I should take seriously or literally, twitter premium pricing it's still a test of this idea even if it wasn't the true intent behind Musk's assertion.
From a purely theoretical level, there's a very broad range of incomes worldwide, so any price point you use to keep spammers out makes it unaffordable to the average person in many nations, and varying pricing by nation just means the spammers pretend to be from the cheapest nation(s).
We also have a demonstration of payment-based messaging systems in that price range with SMS and voice calls, which still get junk. (Nation-specific: my German SIM gets none while my UK SIM gets a lot… but only when I actually visit the UK).
For subscription-based payment filtering, similar — while it's hard for me to determine which of Musks's statements I should take seriously or literally, twitter premium pricing it's still a test of this idea even if it wasn't the true intent behind Musk's assertion.