I don't see any other option than cryptocurrencies which could give 430000x profit in 7 years. There might be some altcoins which may have this potential but just like Bitcoin in 2010, you would be skeptical of it. You won't trust it. Nobody was sure of the success of Bitcoin in 2010. Those initial investors somehow blindly bet on it. So will be the case of any altcoin that can give unpredictable return in 7 years.

Find an altcoin for your blind bet! It is just a game of choosing right coin at right time.