Considering it costs a fifth of 1Password, and has had an almost-fully-featured free option since early days, I suspect that Premium income is not their main so

Considering it costs a fifth of 1Password, and has had an almost-fully-featured free option since early days, I suspect that Premium income is not their main source of funds. Maybe they got investment to survive while they built a business-friendly product. Maybe they consult for businesses running their own servers.