Those that depend on creating new accounts to replace blocked ones.
Getting a new phone number isn't expensive, but it's infinitely more expensive than zero. And if a service is willing to block the phone companies that offer the cheapest new numbers, the price rises again.
Getting a new phone number isn't expensive, but it's infinitely more expensive than zero. And if a service is willing to block the phone companies that offer the cheapest new numbers, the price rises again.