En réponse à Pouhiou.

Il y a assez peu d'informations à ce sujet. Cet article (11 mars 2016) répond cependant en partie à la question :

"Wire receives financial backing from Iconical, a group of designers, engineers and executives that act as alternative to traditional venture capital investors. Friis invests in Wire as part of Iconical.

It has not disclosed how much funding it has received. A key selling point for Wire is that it protects users from advertising. Like many start-ups in this area, it is seeking to grow quickly and discover a sustainable business model later."

Sources : https://en.wikipedia.org/wiki/Wire_Swiss#Business_model & http://www.reuters.com/article/us-dataprotection-messaging-wire-idUSKCN0WC2GM