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The marginal cost of messaging is low enough that phone companies are happy to offer you an incredibly low cost per formerly-private communication (landline or
by learnstats2 12y ago
The marginal cost of messaging is low enough that phone companies are happy to offer you an incredibly low cost per formerly-private communication (landline or mobile).
while the marginal cost of e-mail is so low that we get tonnes of spam.
Who needs to pay anything more? We already pay for the infrastructure.