If a product earns money, then hopefully it is providing value to users. If the number of users increase, more value is provided. If the number of users is arbitrarily limited, then people miss value they should get.
1) Why "should" them? Just because some people built a service doesn't mean they owe it to everyone.
2) The internet may scale worldwide, by that doesn't mean any service can do so while maintaining that value per user. Hell, it may not scale beyond a neighborhood, let alone a country.
