> If, at some time in the future, it manages to create a usable bridge to connect between two popular private services (say Whatsapp and Telegram, or Teams and

> If, at some time in the future, it manages to create a usable bridge to connect between two popular private services (say Whatsapp and Telegram, or Teams and Slack) it could start accumulating network effects Well, I think usable bridges for such apps are a thing already. See e.g. https://element.io/element-matrix-store https://element.io/element-matrix-store and https://beeper.com https://beeper.com Problems are: - it's a subscription based service - End to end encryption is not active for these services as long as you don't run the bridge yourself (which in principle is possible as well, see e.g. the description at the website of Beeper) which stretches usable a bit... Both problems would likely be solved if these services would provide an API for other messengers and would cooperate on a common standard for E2EE like MLS, however the likelihood for that ... seems pretty small. 1.