This is a really interesting comment.
I completely agree with the buyer v user persona distinction. If I were on a podcast and someone flipped a coin...heads I argue that Ockam is a B2C company, tails I argue that Ockam is a B2B company - I could do both.
"Freemium" is a good product model in this case, regardless of the OSS part, because "freemium" isn't a pricing model, it's a customer acquisition strategy.