You're putting the cart before the horse; until you change the government and thus the bail system, we need bondsman. Making bounties illegal won't stop judges from setting bails people can't afford and is thus not a valid solution.
You finally explained a mystery to me why growing up in Oregon, I've never seen a bailbond place with its flashy neon signs and general run-down areas outside of courthouses. Something I became fairly familiar with moving around California.