Why has Satoshi's vision for the Bitcoin as a peer-to-peer electronic cash system failed?
How did the investors ruin the vision which was similar to the Napster where data was shared at its own expense and received free of charge?
The investors did not do a thing, bitcoin is a currency, of course it was going to be traded and people will try to make money out of it, that is just natural, second you seem to be talking about miners as well, miners are taking the biggest risk here since they have invested a fortune in specialized hardware that is completely useless except to mine bitcoin and they cannot do this for free they need to get profits, so the vision of satoshi has not failed we are still in the early stages and we do not know what it is going to happen at the end.