Wired just published a long interview with @Mer__edith of Signal:
https://archive.is/SjY5B
"I see Signal in 10 years being nearly ubiquitous. I see it being supported by a novel sustainability infrastructure—and I’m being vague about that just because I think we actually need to create the kinds of endowments and support mechanisms that can sustain capital-intensive tech without the surveillance business model. And that’s what I’m actually engaged in thinking through."