[aine]

Matrix.org is the hugest public Matrix server, plus $100k is not just infrastructure costs, but development and maintenance of the bridges as well. As an etke.cc developer, I can assure you that development, maintenance, and operations even a small bridge is no joke.

t2bot's costs look like infrastructure and operation costs, not development and maintenance.

Disclaimer: I'm Aine of etke.cc, we offer managed Matrix servers with numerous different components, including bridges. Some of the components (like Postmoogle - email bridge) are developed and maintained by our team.