I don't think it is the right section where you get a positive reply! Post your findings in Technical Support as your privkey coincides with btc too..

What OP says is true man. All Cryptocurrencies are based on just cryptography where they share the same privkeys. Only difference is that the pubkey and address would be different for different coins. Both btc and eth use elliptic key cryptography so it is possible for the coins to be present in any privkeys.

But what I don't agree with OP is that, it is literally impossible for the privkeys to clash with one another when they are being created. For instance, they are around 2^256 private keys existing in this universe  and 2^96 keys for each address. It's almost impossible to find a private key with balance left in them.

@OP If your findings are really true and it does contain such huge fortune, try using BIP44 wallets. BIP44 helps user to use a single privkey or masterseed for various cryptocoins. I am not sure about usage of BIP44 wallets, as I haven't tried one.
Anyways Services is not the right place for discussion about this. Try to move this topic to Technical Support for better replies from devs which may really help you.