>>mikece+(OP)
Signal had 40 million active users in 2021 [1]. With 14 million in infra cost, that comes to .35 per user/year. Total expenses are about 33 million, so about .825 per user/year. All in all that seems very reasonable.
>>nvy+Rg
The sms decision made signal go from THE messaging app on my phone to an app I only use with a very small subset of my contacts. It is infuriating that they didn't allow users to retain that functionality when it costs them nothing, and they could have disabled it by default.