That's why we should be worried. The ease of using Telegram over any other service is clear and that's why most companies and public institutions are moving their old messaging services to Telegram. Without wanting to say that Telegram's job is easy (it's not), it's too easy to run a centralized service and make it easy to use.

Of course companies should use whatever is most cost effective to run their private communications. But when running a public communication channel restricting to a centralized service should not be an option.