do i misunderstand how the bitcoin client operates? if BTC gets widely adopted, just the massive amount # of ppl running the client alone will be enough to keep the blockchain safe and running?
Even if they mine while running the client, it won't be enough to keep the blockchain safe because of the huge computational advantage specialized hardware has over commodity hardware. However, if transaction fees aren't enough to incentivitize mining by then, it won't be worth attacking anyway.