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I guess that question gets answered when the last email was sent and all communication happens through WhatsApp or similar.

• wolfgke 8y ago
  > I guess that question gets answered when the last email was sent and all communication happens through WhatsApp or similar. Not so easy: There are lots of other factors than cost which decide what wins in a market, such as - trends/hypes - convenience - being available at the right time (in the right place) - ...