These are fair questions, and I’ll gladly provide the answers.
You are right, that Centrifuge does not profit from the current setup. Centrifuge has had 7 funding rounds since 2018, and the most recent one took place this month with investors such as Coinbase Ventures, BlockTower Capital, L1 Digital and Scytale Ventures.
I personally hope that we can find a model where we are self-sustainable in the long - but that is outside the scope of the proposal in this post, so that is a topic for another post. The implementation of protocol fees could be a good start in that direction though, in my opinion.
If you are interested in some of the milestones of Centrifuge since 2018 - including the funding + partnerships - you can check this post.