Any business is about balancing cost structure with revenue potential. For an e-fax service, once you invest in the initial infrastructure (and these days, ther

Any business is about balancing cost structure with revenue potential. For an e-fax service, once you invest in the initial infrastructure (and these days, there might not even be much fixed cost investment.... link together Twilio and a website for example), you are probably making money at $10 a month per customer. So it doesn't really matter that fax usage may be decreasing...there are still lots of people using fax machines and you make more money than it costs you to run the service. My point with the mail pickup thing was that they could never make it scale. Their costs will kill them in the short and long term...even if they get a lot of customers. That is why the e-fax service works and the mail service doesn't.