I have to agree with you here. Yes, I think Big Money (financial institutions/banks/wall street) has already entered the field and I'm certain they're exploring all options in relation to how they can gain control and influence over the market. They're developing their own alt-coins no doubt but I imagine they're devising schemes to eliminate the competition as well.
We already have the bankster coin Ripple (neither decentralized nor a blockchain) others have pointed to ETH being a coin of the system (seed money from Peter Thiel) and banking institutions developing their own crypto exchanges.