Haha seriously! $50 million for something that requires a VPS and some code to start? I honestly don't think I could put that much money into a photo sharing ap

Haha seriously! $50 million for something that requires a VPS and some code to start? I honestly don't think I could put that much money into a photo sharing app if I tried. Even if I paid the developer a million dollars to create it, a million dollars for servers, a million dollars for someone to maintain it, a million on design, and 5 million on marketing I still have $41 million left. So do I just pocket that? What's the deal? I'm honestly perplexed and I've asked before and the answers I get are never able to explain why these startups need or are even worth such amounts. Everyone pretty much says "yeah, I don't get it either". Please, I'm being serious, can someone educate us on how this makes sense?