Most assets are already digitalized, you must mean putting records of real assets on the blockchain. The only time I get physical share certificates is when I participate in an ICO or secondary offering. Most money doesn't actually exist in physical form, a single bank branch can have billions on the books but less than a few hundred thousand in cash. The derivates market is entirely digitalized and the vast majority underlying assets never actually changes hands. Has anyone ever claimed the hogs their futures represent?

You're right though, soon most records will only exist digitally. The world has already changed drastically and digitalization is nothing new. The stock markets and trading is mostly digital. I've never called my broker to place a simple buy/sell stop/limit order and never will.