I wonder how Telegram will subsist and how it’s going to generate money for the longer term. Since it stores all messages and media by default (except secret c

I wonder how Telegram will subsist and how it’s going to generate money for the longer term. Since it stores all messages and media by default (except secret chats) on its cloud, the infrastructure costs will keep going up at some pace with time. It was only a few weeks ago that Telegram announced that it has 400 million monthly active users. How long can Pavel Durov’s wealth keep it alive and how much of his wealth will he continue to commit to the platform as time passes? The platform is surely synonymous with him (at least from his perspective), and there are millions of people who need it and trust it (it’s the only app that large groups of protestors in Hong Kong could safely use).