Don't worry they are all good. Telegram will continue to function, nothing will stop it at all and The TON blockchain isn't going anywhere anytime soon, There is a protocol for these types of scenarios.
Telegram is a centralized service, their servers are controlled by the company, if someone wants to shut them down they can simply seize that and their domains and the whole thing goes down in seconds. There is no "protocol" there is no way around it, everything in there is centralized, from the architecture to the databases
Telegram even complied years ago and has mandatory databases hosted in the Netherlands to comply with EU laws.
I think what you said is something that is true in my opinion, all control is done by the company and at any time it could stop if the server was turned off, but because this is a fairly large company, it is certain that if there is a problem they will be able to make repairs properly according to the rules of the game that may be needed. As a large company they have a tiered staff with qualified expertise and are able to solve every problem that may come to them and there is no need to doubt telegram
Yes, recently Telegram has proven that it is ready to abide by actual legislation, which has been demonstrated by concrete actions, such as storing data in areas that meet the legislation of the European Union. This goes to show just how solemn the company is about preserving trust and the safety of it’s users. In this case, we can be very confident that Telegram has good mechanisms in place to tackle all sorts of issues that may come up. One might say that they are not only very persistent organizations but also have quite a multiple hierarchy, which enables them to react to any given circumstances with great professionalism.
Of course, the knowledge of the Telegram team is perhaps one of the key factors that allow them to keep the service stable and secure for their customers. In the context of technology that often develop, the stability of a big company like this is very essential, and in addressing issues that may crop up at any given period in time. In this manner, we as users can always be cozy and sure that Telegram will always be available to stand the rays or shocks which may come.