I meet loads of people who have collected coins everywhere. They have 20 different types of wallets with a little bit of value. It's due to happen that people will loose their private keys or forget that they even have an account. Over time that value could accumulate pretty big. What will happen to these 'lost' coins? Will these stay on the Blockchain forever, accessible to no one anymore?
Of course it will stay at the blockchain forever,because if theres no one to claim it there will be no chance to get those coins not without their private keys,which is why it is going to be remain to their current wallet,not unless someone has broked the blockchain's code,which is not possible wihtout the help of quantum computer.